Home / 120,259.37-180,451.31-87,251.87

Finding the Fourth Proportional to 120,259.37, 180,451.31 and 87,251.87

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Solution

The fourth proportional to 120,259.37, 180,451.31 and 87,251.87 is: 130,922.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,259.37 : 180,451.31 = 87,251.87 : x
  2. Step 2: Convert to fraction form
    120,259.37/180,451.31 = 87,251.87/x
  3. Step 3: Cross multiply
    120,259.37x = 180,451.31 × 87,251.87
  4. Step 4: Simplify right side
    120,259.37x = 15,744,712,902.93
  5. Step 5: Solve for x
    x = 15,744,712,902.93/120,259.37
  6. Step 6: Final answer
    x = 130,922.97

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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.