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Finding the Fourth Proportional to 169,908.32, 254,868.96 and 86,705.12

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Solution

The fourth proportional to 169,908.32, 254,868.96 and 86,705.12 is: 130,060.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,908.32 : 254,868.96 = 86,705.12 : x
  2. Step 2: Convert to fraction form
    169,908.32/254,868.96 = 86,705.12/x
  3. Step 3: Cross multiply
    169,908.32x = 254,868.96 × 86,705.12
  4. Step 4: Simplify right side
    169,908.32x = 22,098,443,761.08
  5. Step 5: Solve for x
    x = 22,098,443,761.08/169,908.32
  6. Step 6: Final answer
    x = 130,060.99

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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.