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Finding the Fourth Proportional to 120,617.60, 180,926.40 and 50,489.60

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Solution

The fourth proportional to 120,617.60, 180,926.40 and 50,489.60 is: 75,734.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,617.60 : 180,926.40 = 50,489.60 : x
  2. Step 2: Convert to fraction form
    120,617.60/180,926.40 = 50,489.60/x
  3. Step 3: Cross multiply
    120,617.60x = 180,926.40 × 50,489.60
  4. Step 4: Simplify right side
    120,617.60x = 9,134,901,565.44
  5. Step 5: Solve for x
    x = 9,134,901,565.44/120,617.60
  6. Step 6: Final answer
    x = 75,734.40

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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.