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Finding the Fourth Proportional to 125,559.90, 173,195.91 and 74,538

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Solution

The fourth proportional to 125,559.90, 173,195.91 and 74,538 is: 102,816.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,559.90 : 173,195.91 = 74,538 : x
  2. Step 2: Convert to fraction form
    125,559.90/173,195.91 = 74,538/x
  3. Step 3: Cross multiply
    125,559.90x = 173,195.91 × 74,538
  4. Step 4: Simplify right side
    125,559.90x = 12,909,676,739.58
  5. Step 5: Solve for x
    x = 12,909,676,739.58/125,559.90
  6. Step 6: Final answer
    x = 102,816.88

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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.