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Finding the Fourth Proportional to 125,583.90, 188,375.85 and 69,402.30

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Solution

The fourth proportional to 125,583.90, 188,375.85 and 69,402.30 is: 104,103.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,583.90 : 188,375.85 = 69,402.30 : x
  2. Step 2: Convert to fraction form
    125,583.90/188,375.85 = 69,402.30/x
  3. Step 3: Cross multiply
    125,583.90x = 188,375.85 × 69,402.30
  4. Step 4: Simplify right side
    125,583.90x = 13,073,717,254.46
  5. Step 5: Solve for x
    x = 13,073,717,254.46/125,583.90
  6. Step 6: Final answer
    x = 104,103.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.