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Finding the Fourth Proportional to 126,655.65, 174,755.88 and 72,930.78

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Solution

The fourth proportional to 126,655.65, 174,755.88 and 72,930.78 is: 100,627.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,655.65 : 174,755.88 = 72,930.78 : x
  2. Step 2: Convert to fraction form
    126,655.65/174,755.88 = 72,930.78/x
  3. Step 3: Cross multiply
    126,655.65x = 174,755.88 × 72,930.78
  4. Step 4: Simplify right side
    126,655.65x = 12,745,082,637.99
  5. Step 5: Solve for x
    x = 12,745,082,637.99/126,655.65
  6. Step 6: Final answer
    x = 100,627.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.