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Finding the Fourth Proportional to 120,630.60, 180,945.90 and 50,502.60

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Solution

The fourth proportional to 120,630.60, 180,945.90 and 50,502.60 is: 75,753.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,630.60 : 180,945.90 = 50,502.60 : x
  2. Step 2: Convert to fraction form
    120,630.60/180,945.90 = 50,502.60/x
  3. Step 3: Cross multiply
    120,630.60x = 180,945.90 × 50,502.60
  4. Step 4: Simplify right side
    120,630.60x = 9,138,238,409.34
  5. Step 5: Solve for x
    x = 9,138,238,409.34/120,630.60
  6. Step 6: Final answer
    x = 75,753.90

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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.