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Finding the Fourth Proportional to 120,082.86, 180,153.84 and 84,613.46

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Solution

The fourth proportional to 120,082.86, 180,153.84 and 84,613.46 is: 126,941.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,082.86 : 180,153.84 = 84,613.46 : x
  2. Step 2: Convert to fraction form
    120,082.86/180,153.84 = 84,613.46/x
  3. Step 3: Cross multiply
    120,082.86x = 180,153.84 × 84,613.46
  4. Step 4: Simplify right side
    120,082.86x = 15,243,438,833.92
  5. Step 5: Solve for x
    x = 15,243,438,833.92/120,082.86
  6. Step 6: Final answer
    x = 126,941.00

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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.