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Finding the Fourth Proportional to 115,274.52, 159,078.52 and 64,287.30

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Solution

The fourth proportional to 115,274.52, 159,078.52 and 64,287.30 is: 88,716.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,274.52 : 159,078.52 = 64,287.30 : x
  2. Step 2: Convert to fraction form
    115,274.52/159,078.52 = 64,287.30/x
  3. Step 3: Cross multiply
    115,274.52x = 159,078.52 × 64,287.30
  4. Step 4: Simplify right side
    115,274.52x = 10,226,728,854.08
  5. Step 5: Solve for x
    x = 10,226,728,854.08/115,274.52
  6. Step 6: Final answer
    x = 88,716.30

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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.