Home / 120,261.92-180,455.11-87,254.42

Finding the Fourth Proportional to 120,261.92, 180,455.11 and 87,254.42

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Solution

The fourth proportional to 120,261.92, 180,455.11 and 87,254.42 is: 130,926.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,261.92 : 180,455.11 = 87,254.42 : x
  2. Step 2: Convert to fraction form
    120,261.92/180,455.11 = 87,254.42/x
  3. Step 3: Cross multiply
    120,261.92x = 180,455.11 × 87,254.42
  4. Step 4: Simplify right side
    120,261.92x = 15,745,504,838.67
  5. Step 5: Solve for x
    x = 15,745,504,838.67/120,261.92
  6. Step 6: Final answer
    x = 130,926.78

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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.