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Finding the Fourth Proportional to 125,351.76, 188,187.96 and 107,695.40

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Solution

The fourth proportional to 125,351.76, 188,187.96 and 107,695.40 is: 161,680.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,351.76 : 188,187.96 = 107,695.40 : x
  2. Step 2: Convert to fraction form
    125,351.76/188,187.96 = 107,695.40/x
  3. Step 3: Cross multiply
    125,351.76x = 188,187.96 × 107,695.40
  4. Step 4: Simplify right side
    125,351.76x = 20,266,977,627.38
  5. Step 5: Solve for x
    x = 20,266,977,627.38/125,351.76
  6. Step 6: Final answer
    x = 161,680.84

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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.