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Finding the Fourth Proportional to 138,275.71, 207,443.81 and 44,790.91

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Solution

The fourth proportional to 138,275.71, 207,443.81 and 44,790.91 is: 67,196.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,275.71 : 207,443.81 = 44,790.91 : x
  2. Step 2: Convert to fraction form
    138,275.71/207,443.81 = 44,790.91/x
  3. Step 3: Cross multiply
    138,275.71x = 207,443.81 × 44,790.91
  4. Step 4: Simplify right side
    138,275.71x = 9,291,597,023.77
  5. Step 5: Solve for x
    x = 9,291,597,023.77/138,275.71
  6. Step 6: Final answer
    x = 67,196.16

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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.