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Finding the Fourth Proportional to 125,578.92, 173,301.80 and 68,220.53

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Solution

The fourth proportional to 125,578.92, 173,301.80 and 68,220.53 is: 94,145.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,578.92 : 173,301.80 = 68,220.53 : x
  2. Step 2: Convert to fraction form
    125,578.92/173,301.80 = 68,220.53/x
  3. Step 3: Cross multiply
    125,578.92x = 173,301.80 × 68,220.53
  4. Step 4: Simplify right side
    125,578.92x = 11,822,739,438.34
  5. Step 5: Solve for x
    x = 11,822,739,438.34/125,578.92
  6. Step 6: Final answer
    x = 94,145.89

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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.