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Finding the Fourth Proportional to 125,313.39, 172,932.71 and 68,725.17

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Solution

The fourth proportional to 125,313.39, 172,932.71 and 68,725.17 is: 94,840.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,313.39 : 172,932.71 = 68,725.17 : x
  2. Step 2: Convert to fraction form
    125,313.39/172,932.71 = 68,725.17/x
  3. Step 3: Cross multiply
    125,313.39x = 172,932.71 × 68,725.17
  4. Step 4: Simplify right side
    125,313.39x = 11,884,829,893.31
  5. Step 5: Solve for x
    x = 11,884,829,893.31/125,313.39
  6. Step 6: Final answer
    x = 94,840.86

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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.