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Finding the Fourth Proportional to 156,321.20, 234,481.80 and 73,377.20

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Solution

The fourth proportional to 156,321.20, 234,481.80 and 73,377.20 is: 110,065.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,321.20 : 234,481.80 = 73,377.20 : x
  2. Step 2: Convert to fraction form
    156,321.20/234,481.80 = 73,377.20/x
  3. Step 3: Cross multiply
    156,321.20x = 234,481.80 × 73,377.20
  4. Step 4: Simplify right side
    156,321.20x = 17,205,617,934.96
  5. Step 5: Solve for x
    x = 17,205,617,934.96/156,321.20
  6. Step 6: Final answer
    x = 110,065.80

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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.