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Finding the Fourth Proportional to 125,228.52, 172,818.36 and 68,643

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Solution

The fourth proportional to 125,228.52, 172,818.36 and 68,643 is: 94,728.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,228.52 : 172,818.36 = 68,643 : x
  2. Step 2: Convert to fraction form
    125,228.52/172,818.36 = 68,643/x
  3. Step 3: Cross multiply
    125,228.52x = 172,818.36 × 68,643
  4. Step 4: Simplify right side
    125,228.52x = 11,862,770,685.48
  5. Step 5: Solve for x
    x = 11,862,770,685.48/125,228.52
  6. Step 6: Final answer
    x = 94,728.99

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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.