Home / 133,087.20-183,691.20-87,773.28

Finding the Fourth Proportional to 133,087.20, 183,691.20 and 87,773.28

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Solution

The fourth proportional to 133,087.20, 183,691.20 and 87,773.28 is: 121,147.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,087.20 : 183,691.20 = 87,773.28 : x
  2. Step 2: Convert to fraction form
    133,087.20/183,691.20 = 87,773.28/x
  3. Step 3: Cross multiply
    133,087.20x = 183,691.20 × 87,773.28
  4. Step 4: Simplify right side
    133,087.20x = 16,123,179,131.14
  5. Step 5: Solve for x
    x = 16,123,179,131.14/133,087.20
  6. Step 6: Final answer
    x = 121,147.48

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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.