Home / 120,127.29-165,761.09-66,404.85

Finding the Fourth Proportional to 120,127.29, 165,761.09 and 66,404.85

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Solution

The fourth proportional to 120,127.29, 165,761.09 and 66,404.85 is: 91,630.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,127.29 : 165,761.09 = 66,404.85 : x
  2. Step 2: Convert to fraction form
    120,127.29/165,761.09 = 66,404.85/x
  3. Step 3: Cross multiply
    120,127.29x = 165,761.09 × 66,404.85
  4. Step 4: Simplify right side
    120,127.29x = 11,007,340,317.29
  5. Step 5: Solve for x
    x = 11,007,340,317.29/120,127.29
  6. Step 6: Final answer
    x = 91,630.64

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1.5x scale

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.