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Finding the Fourth Proportional to 108,874.39, 150,242.80 and 61,129.75

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Solution

The fourth proportional to 108,874.39, 150,242.80 and 61,129.75 is: 84,356.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,874.39 : 150,242.80 = 61,129.75 : x
  2. Step 2: Convert to fraction form
    108,874.39/150,242.80 = 61,129.75/x
  3. Step 3: Cross multiply
    108,874.39x = 150,242.80 × 61,129.75
  4. Step 4: Simplify right side
    108,874.39x = 9,184,304,803.30
  5. Step 5: Solve for x
    x = 9,184,304,803.30/108,874.39
  6. Step 6: Final answer
    x = 84,356.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.