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Finding the Fourth Proportional to 123,425.69, 185,139.14 and 29,931.44

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Solution

The fourth proportional to 123,425.69, 185,139.14 and 29,931.44 is: 44,897.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,425.69 : 185,139.14 = 29,931.44 : x
  2. Step 2: Convert to fraction form
    123,425.69/185,139.14 = 29,931.44/x
  3. Step 3: Cross multiply
    123,425.69x = 185,139.14 × 29,931.44
  4. Step 4: Simplify right side
    123,425.69x = 5,541,480,597.71
  5. Step 5: Solve for x
    x = 5,541,480,597.71/123,425.69
  6. Step 6: Final answer
    x = 44,897.30

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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.