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Finding the Fourth Proportional to 125,230.52, 172,821.12 and 68,645

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Solution

The fourth proportional to 125,230.52, 172,821.12 and 68,645 is: 94,731.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,230.52 : 172,821.12 = 68,645 : x
  2. Step 2: Convert to fraction form
    125,230.52/172,821.12 = 68,645/x
  3. Step 3: Cross multiply
    125,230.52x = 172,821.12 × 68,645
  4. Step 4: Simplify right side
    125,230.52x = 11,863,305,782.40
  5. Step 5: Solve for x
    x = 11,863,305,782.40/125,230.52
  6. Step 6: Final answer
    x = 94,731.75

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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.