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Finding the Fourth Proportional to 120,617.10, 180,925.65 and 50,489.10

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Solution

The fourth proportional to 120,617.10, 180,925.65 and 50,489.10 is: 75,733.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,617.10 : 180,925.65 = 50,489.10 : x
  2. Step 2: Convert to fraction form
    120,617.10/180,925.65 = 50,489.10/x
  3. Step 3: Cross multiply
    120,617.10x = 180,925.65 × 50,489.10
  4. Step 4: Simplify right side
    120,617.10x = 9,134,773,235.42
  5. Step 5: Solve for x
    x = 9,134,773,235.42/120,617.10
  6. Step 6: Final answer
    x = 75,733.65

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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.