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Finding the Fourth Proportional to 123,371.64, 185,113.80 and 67,127.40

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Solution

The fourth proportional to 123,371.64, 185,113.80 and 67,127.40 is: 100,721.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,371.64 : 185,113.80 = 67,127.40 : x
  2. Step 2: Convert to fraction form
    123,371.64/185,113.80 = 67,127.40/x
  3. Step 3: Cross multiply
    123,371.64x = 185,113.80 × 67,127.40
  4. Step 4: Simplify right side
    123,371.64x = 12,426,208,098.12
  5. Step 5: Solve for x
    x = 12,426,208,098.12/123,371.64
  6. Step 6: Final answer
    x = 100,721.76

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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.