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Finding the Fourth Proportional to 138,650.13, 207,849.24 and 72,012.24

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Solution

The fourth proportional to 138,650.13, 207,849.24 and 72,012.24 is: 107,952.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,650.13 : 207,849.24 = 72,012.24 : x
  2. Step 2: Convert to fraction form
    138,650.13/207,849.24 = 72,012.24/x
  3. Step 3: Cross multiply
    138,650.13x = 207,849.24 × 72,012.24
  4. Step 4: Simplify right side
    138,650.13x = 14,967,689,354.70
  5. Step 5: Solve for x
    x = 14,967,689,354.70/138,650.13
  6. Step 6: Final answer
    x = 107,952.94

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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.