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Finding the Fourth Proportional to 115,122.78, 158,867.03 and 64,135.44

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Solution

The fourth proportional to 115,122.78, 158,867.03 and 64,135.44 is: 88,505.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,122.78 : 158,867.03 = 64,135.44 : x
  2. Step 2: Convert to fraction form
    115,122.78/158,867.03 = 64,135.44/x
  3. Step 3: Cross multiply
    115,122.78x = 158,867.03 × 64,135.44
  4. Step 4: Simplify right side
    115,122.78x = 10,189,006,549.87
  5. Step 5: Solve for x
    x = 10,189,006,549.87/115,122.78
  6. Step 6: Final answer
    x = 88,505.56

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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.