Home / 120,117.66-165,761.28-66,404.04

Finding the Fourth Proportional to 120,117.66, 165,761.28 and 66,404.04

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Solution

The fourth proportional to 120,117.66, 165,761.28 and 66,404.04 is: 91,636.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,117.66 : 165,761.28 = 66,404.04 : x
  2. Step 2: Convert to fraction form
    120,117.66/165,761.28 = 66,404.04/x
  3. Step 3: Cross multiply
    120,117.66x = 165,761.28 × 66,404.04
  4. Step 4: Simplify right side
    120,117.66x = 11,007,218,667.57
  5. Step 5: Solve for x
    x = 11,007,218,667.57/120,117.66
  6. Step 6: Final answer
    x = 91,636.97

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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.