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Finding the Fourth Proportional to 120,170.57, 165,835.15 and 69,164.72

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Solution

The fourth proportional to 120,170.57, 165,835.15 and 69,164.72 is: 95,447.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,170.57 : 165,835.15 = 69,164.72 : x
  2. Step 2: Convert to fraction form
    120,170.57/165,835.15 = 69,164.72/x
  3. Step 3: Cross multiply
    120,170.57x = 165,835.15 × 69,164.72
  4. Step 4: Simplify right side
    120,170.57x = 11,469,941,335.70
  5. Step 5: Solve for x
    x = 11,469,941,335.70/120,170.57
  6. Step 6: Final answer
    x = 95,447.17

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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.