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Finding the Fourth Proportional to 120,259.96, 180,452.19 and 87,252.46

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Solution

The fourth proportional to 120,259.96, 180,452.19 and 87,252.46 is: 130,923.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,259.96 : 180,452.19 = 87,252.46 : x
  2. Step 2: Convert to fraction form
    120,259.96/180,452.19 = 87,252.46/x
  3. Step 3: Cross multiply
    120,259.96x = 180,452.19 × 87,252.46
  4. Step 4: Simplify right side
    120,259.96x = 15,744,897,489.89
  5. Step 5: Solve for x
    x = 15,744,897,489.89/120,259.96
  6. Step 6: Final answer
    x = 130,923.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.