Home / 120,119.91-165,751.05-66,397.58

Finding the Fourth Proportional to 120,119.91, 165,751.05 and 66,397.58

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Solution

The fourth proportional to 120,119.91, 165,751.05 and 66,397.58 is: 91,620.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,119.91 : 165,751.05 = 66,397.58 : x
  2. Step 2: Convert to fraction form
    120,119.91/165,751.05 = 66,397.58/x
  3. Step 3: Cross multiply
    120,119.91x = 165,751.05 × 66,397.58
  4. Step 4: Simplify right side
    120,119.91x = 11,005,467,773.70
  5. Step 5: Solve for x
    x = 11,005,467,773.70/120,119.91
  6. Step 6: Final answer
    x = 91,620.68

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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.