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Finding the Fourth Proportional to 115,753.20, 173,629.80 and 88,105.20

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Solution

The fourth proportional to 115,753.20, 173,629.80 and 88,105.20 is: 132,157.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,753.20 : 173,629.80 = 88,105.20 : x
  2. Step 2: Convert to fraction form
    115,753.20/173,629.80 = 88,105.20/x
  3. Step 3: Cross multiply
    115,753.20x = 173,629.80 × 88,105.20
  4. Step 4: Simplify right side
    115,753.20x = 15,297,688,254.96
  5. Step 5: Solve for x
    x = 15,297,688,254.96/115,753.20
  6. Step 6: Final answer
    x = 132,157.80

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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.