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Finding the Fourth Proportional to 169,090.56, 253,793.28 and 86,046.72

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Solution

The fourth proportional to 169,090.56, 253,793.28 and 86,046.72 is: 129,150.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,090.56 : 253,793.28 = 86,046.72 : x
  2. Step 2: Convert to fraction form
    169,090.56/253,793.28 = 86,046.72/x
  3. Step 3: Cross multiply
    169,090.56x = 253,793.28 × 86,046.72
  4. Step 4: Simplify right side
    169,090.56x = 21,838,079,302.04
  5. Step 5: Solve for x
    x = 21,838,079,302.04/169,090.56
  6. Step 6: Final answer
    x = 129,150.20

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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.