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Finding the Fourth Proportional to 126,003.70, 189,005.55 and 56,019.70

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Solution

The fourth proportional to 126,003.70, 189,005.55 and 56,019.70 is: 84,029.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,003.70 : 189,005.55 = 56,019.70 : x
  2. Step 2: Convert to fraction form
    126,003.70/189,005.55 = 56,019.70/x
  3. Step 3: Cross multiply
    126,003.70x = 189,005.55 × 56,019.70
  4. Step 4: Simplify right side
    126,003.70x = 10,588,034,209.34
  5. Step 5: Solve for x
    x = 10,588,034,209.34/126,003.70
  6. Step 6: Final answer
    x = 84,029.55

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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.