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Finding the Fourth Proportional to 156,630.40, 234,945.60 and 51,452.80

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Solution

The fourth proportional to 156,630.40, 234,945.60 and 51,452.80 is: 77,179.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,630.40 : 234,945.60 = 51,452.80 : x
  2. Step 2: Convert to fraction form
    156,630.40/234,945.60 = 51,452.80/x
  3. Step 3: Cross multiply
    156,630.40x = 234,945.60 × 51,452.80
  4. Step 4: Simplify right side
    156,630.40x = 12,088,608,967.68
  5. Step 5: Solve for x
    x = 12,088,608,967.68/156,630.40
  6. Step 6: Final answer
    x = 77,179.20

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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.