Home / 90,612,126.45-135,918,189.69-90,612,126.45

Finding the Fourth Proportional to 90,612,126.45, 135,918,189.69 and 90,612,126.45

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Solution

The fourth proportional to 90,612,126.45, 135,918,189.69 and 90,612,126.45 is: 135,918,189.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,612,126.45 : 135,918,189.69 = 90,612,126.45 : x
  2. Step 2: Convert to fraction form
    90,612,126.45/135,918,189.69 = 90,612,126.45/x
  3. Step 3: Cross multiply
    90,612,126.45x = 135,918,189.69 × 90,612,126.45
  4. Step 4: Simplify right side
    90,612,126.45x = 12,315,836,191,045,366
  5. Step 5: Solve for x
    x = 12,315,836,191,045,366/90,612,126.45
  6. Step 6: Final answer
    x = 135,918,189.69

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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.