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Finding the Fourth Proportional to 268,156.56, 402,301.32 and 81,168.60

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Solution

The fourth proportional to 268,156.56, 402,301.32 and 81,168.60 is: 121,773.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,156.56 : 402,301.32 = 81,168.60 : x
  2. Step 2: Convert to fraction form
    268,156.56/402,301.32 = 81,168.60/x
  3. Step 3: Cross multiply
    268,156.56x = 402,301.32 × 81,168.60
  4. Step 4: Simplify right side
    268,156.56x = 32,654,234,922.55
  5. Step 5: Solve for x
    x = 32,654,234,922.55/268,156.56
  6. Step 6: Final answer
    x = 121,773.02

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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.