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Finding the Fourth Proportional to 124,959.87, 172,447.11 and 68,372.46

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Solution

The fourth proportional to 124,959.87, 172,447.11 and 68,372.46 is: 94,355.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,959.87 : 172,447.11 = 68,372.46 : x
  2. Step 2: Convert to fraction form
    124,959.87/172,447.11 = 68,372.46/x
  3. Step 3: Cross multiply
    124,959.87x = 172,447.11 × 68,372.46
  4. Step 4: Simplify right side
    124,959.87x = 11,790,633,130.59
  5. Step 5: Solve for x
    x = 11,790,633,130.59/124,959.87
  6. Step 6: Final answer
    x = 94,355.36

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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.