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Finding the Fourth Proportional to 125,133.80, 172,685.16 and 67,773.78

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Solution

The fourth proportional to 125,133.80, 172,685.16 and 67,773.78 is: 93,528.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,133.80 : 172,685.16 = 67,773.78 : x
  2. Step 2: Convert to fraction form
    125,133.80/172,685.16 = 67,773.78/x
  3. Step 3: Cross multiply
    125,133.80x = 172,685.16 × 67,773.78
  4. Step 4: Simplify right side
    125,133.80x = 11,703,526,043.10
  5. Step 5: Solve for x
    x = 11,703,526,043.10/125,133.80
  6. Step 6: Final answer
    x = 93,528.10

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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.