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Finding the Fourth Proportional to 180,621.12, 271,098 and 91,938

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Solution

The fourth proportional to 180,621.12, 271,098 and 91,938 is: 137,991.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,621.12 : 271,098 = 91,938 : x
  2. Step 2: Convert to fraction form
    180,621.12/271,098 = 91,938/x
  3. Step 3: Cross multiply
    180,621.12x = 271,098 × 91,938
  4. Step 4: Simplify right side
    180,621.12x = 24,924,207,924
  5. Step 5: Solve for x
    x = 24,924,207,924/180,621.12
  6. Step 6: Final answer
    x = 137,991.66

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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.