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Finding the Fourth Proportional to 123,472.47, 170,390.75 and 69,757.41

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Solution

The fourth proportional to 123,472.47, 170,390.75 and 69,757.41 is: 96,264.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,472.47 : 170,390.75 = 69,757.41 : x
  2. Step 2: Convert to fraction form
    123,472.47/170,390.75 = 69,757.41/x
  3. Step 3: Cross multiply
    123,472.47x = 170,390.75 × 69,757.41
  4. Step 4: Simplify right side
    123,472.47x = 11,886,017,059.17
  5. Step 5: Solve for x
    x = 11,886,017,059.17/123,472.47
  6. Step 6: Final answer
    x = 96,264.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.