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Finding the Fourth Proportional to 133,058.89, 183,621.24 and 90,691.42

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Solution

The fourth proportional to 133,058.89, 183,621.24 and 90,691.42 is: 125,154.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,058.89 : 183,621.24 = 90,691.42 : x
  2. Step 2: Convert to fraction form
    133,058.89/183,621.24 = 90,691.42/x
  3. Step 3: Cross multiply
    133,058.89x = 183,621.24 × 90,691.42
  4. Step 4: Simplify right side
    133,058.89x = 16,652,870,997.76
  5. Step 5: Solve for x
    x = 16,652,870,997.76/133,058.89
  6. Step 6: Final answer
    x = 125,154.14

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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.