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Finding the Fourth Proportional to 125,349.94, 172,982.95 and 68,761.32

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Solution

The fourth proportional to 125,349.94, 172,982.95 and 68,761.32 is: 94,890.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,349.94 : 172,982.95 = 68,761.32 : x
  2. Step 2: Convert to fraction form
    125,349.94/172,982.95 = 68,761.32/x
  3. Step 3: Cross multiply
    125,349.94x = 172,982.95 × 68,761.32
  4. Step 4: Simplify right side
    125,349.94x = 11,894,535,114.58
  5. Step 5: Solve for x
    x = 11,894,535,114.58/125,349.94
  6. Step 6: Final answer
    x = 94,890.63

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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.