Home / 84,126,138.40-126,189,207.60-30,254,010.40

Finding the Fourth Proportional to 84,126,138.40, 126,189,207.60 and 30,254,010.40

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Solution

The fourth proportional to 84,126,138.40, 126,189,207.60 and 30,254,010.40 is: 45,381,015.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,126,138.40 : 126,189,207.60 = 30,254,010.40 : x
  2. Step 2: Convert to fraction form
    84,126,138.40/126,189,207.60 = 30,254,010.40/x
  3. Step 3: Cross multiply
    84,126,138.40x = 126,189,207.60 × 30,254,010.40
  4. Step 4: Simplify right side
    84,126,138.40x = 3,817,729,599,098,158.50
  5. Step 5: Solve for x
    x = 3,817,729,599,098,158.50/84,126,138.40
  6. Step 6: Final answer
    x = 45,381,015.60

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.