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Finding the Fourth Proportional to 138,262.68, 207,225.54 and 71,666.10

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Solution

The fourth proportional to 138,262.68, 207,225.54 and 71,666.10 is: 107,411.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,262.68 : 207,225.54 = 71,666.10 : x
  2. Step 2: Convert to fraction form
    138,262.68/207,225.54 = 71,666.10/x
  3. Step 3: Cross multiply
    138,262.68x = 207,225.54 × 71,666.10
  4. Step 4: Simplify right side
    138,262.68x = 14,851,046,272.19
  5. Step 5: Solve for x
    x = 14,851,046,272.19/138,262.68
  6. Step 6: Final answer
    x = 107,411.82

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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.