Home / 123,371.52-170,246.08-72,377.28

Finding the Fourth Proportional to 123,371.52, 170,246.08 and 72,377.28

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Solution

The fourth proportional to 123,371.52, 170,246.08 and 72,377.28 is: 99,876.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,371.52 : 170,246.08 = 72,377.28 : x
  2. Step 2: Convert to fraction form
    123,371.52/170,246.08 = 72,377.28/x
  3. Step 3: Cross multiply
    123,371.52x = 170,246.08 × 72,377.28
  4. Step 4: Simplify right side
    123,371.52x = 12,321,948,201.06
  5. Step 5: Solve for x
    x = 12,321,948,201.06/123,371.52
  6. Step 6: Final answer
    x = 99,876.76

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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.