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Finding the Fourth Proportional to 120,599.48, 180,906.74 and 40,630.80

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Solution

The fourth proportional to 120,599.48, 180,906.74 and 40,630.80 is: 60,948.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,599.48 : 180,906.74 = 40,630.80 : x
  2. Step 2: Convert to fraction form
    120,599.48/180,906.74 = 40,630.80/x
  3. Step 3: Cross multiply
    120,599.48x = 180,906.74 × 40,630.80
  4. Step 4: Simplify right side
    120,599.48x = 7,350,386,199.20
  5. Step 5: Solve for x
    x = 7,350,386,199.20/120,599.48
  6. Step 6: Final answer
    x = 60,948.74

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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.