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Finding the Fourth Proportional to 113,228.70, 169,972.65 and 66,507.90

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Solution

The fourth proportional to 113,228.70, 169,972.65 and 66,507.90 is: 99,837.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,228.70 : 169,972.65 = 66,507.90 : x
  2. Step 2: Convert to fraction form
    113,228.70/169,972.65 = 66,507.90/x
  3. Step 3: Cross multiply
    113,228.70x = 169,972.65 × 66,507.90
  4. Step 4: Simplify right side
    113,228.70x = 11,304,524,008.94
  5. Step 5: Solve for x
    x = 11,304,524,008.94/113,228.70
  6. Step 6: Final answer
    x = 99,837.97

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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.