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Finding the Fourth Proportional to 154,359.70, 231,777.15 and 84,375.70

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Solution

The fourth proportional to 154,359.70, 231,777.15 and 84,375.70 is: 126,693.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,359.70 : 231,777.15 = 84,375.70 : x
  2. Step 2: Convert to fraction form
    154,359.70/231,777.15 = 84,375.70/x
  3. Step 3: Cross multiply
    154,359.70x = 231,777.15 × 84,375.70
  4. Step 4: Simplify right side
    154,359.70x = 19,556,359,275.26
  5. Step 5: Solve for x
    x = 19,556,359,275.26/154,359.70
  6. Step 6: Final answer
    x = 126,693.43

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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.