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Finding the Fourth Proportional to 125,394.32, 173,041.80 and 68,805.20

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Solution

The fourth proportional to 125,394.32, 173,041.80 and 68,805.20 is: 94,949.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,394.32 : 173,041.80 = 68,805.20 : x
  2. Step 2: Convert to fraction form
    125,394.32/173,041.80 = 68,805.20/x
  3. Step 3: Cross multiply
    125,394.32x = 173,041.80 × 68,805.20
  4. Step 4: Simplify right side
    125,394.32x = 11,906,175,657.36
  5. Step 5: Solve for x
    x = 11,906,175,657.36/125,394.32
  6. Step 6: Final answer
    x = 94,949.88

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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.