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Finding the Fourth Proportional to 120,119.62, 165,761.85 and 65,669.62

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Solution

The fourth proportional to 120,119.62, 165,761.85 and 65,669.62 is: 90,622.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,119.62 : 165,761.85 = 65,669.62 : x
  2. Step 2: Convert to fraction form
    120,119.62/165,761.85 = 65,669.62/x
  3. Step 3: Cross multiply
    120,119.62x = 165,761.85 × 65,669.62
  4. Step 4: Simplify right side
    120,119.62x = 10,885,517,700.00
  5. Step 5: Solve for x
    x = 10,885,517,700.00/120,119.62
  6. Step 6: Final answer
    x = 90,622.31

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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.