Home / 120,020.42-165,625.78-66,304.06

Finding the Fourth Proportional to 120,020.42, 165,625.78 and 66,304.06

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Solution

The fourth proportional to 120,020.42, 165,625.78 and 66,304.06 is: 91,498.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,020.42 : 165,625.78 = 66,304.06 : x
  2. Step 2: Convert to fraction form
    120,020.42/165,625.78 = 66,304.06/x
  3. Step 3: Cross multiply
    120,020.42x = 165,625.78 × 66,304.06
  4. Step 4: Simplify right side
    120,020.42x = 10,981,661,654.67
  5. Step 5: Solve for x
    x = 10,981,661,654.67/120,020.42
  6. Step 6: Final answer
    x = 91,498.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.