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Finding the Fourth Proportional to 125,808.18, 173,469.84 and 100,294.61

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Solution

The fourth proportional to 125,808.18, 173,469.84 and 100,294.61 is: 138,290.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,808.18 : 173,469.84 = 100,294.61 : x
  2. Step 2: Convert to fraction form
    125,808.18/173,469.84 = 100,294.61/x
  3. Step 3: Cross multiply
    125,808.18x = 173,469.84 × 100,294.61
  4. Step 4: Simplify right side
    125,808.18x = 17,398,089,082.21
  5. Step 5: Solve for x
    x = 17,398,089,082.21/125,808.18
  6. Step 6: Final answer
    x = 138,290.60

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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.