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Finding the Fourth Proportional to 115,175.60, 158,888 and 67,399.38

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Solution

The fourth proportional to 115,175.60, 158,888 and 67,399.38 is: 92,979.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,175.60 : 158,888 = 67,399.38 : x
  2. Step 2: Convert to fraction form
    115,175.60/158,888 = 67,399.38/x
  3. Step 3: Cross multiply
    115,175.60x = 158,888 × 67,399.38
  4. Step 4: Simplify right side
    115,175.60x = 10,708,952,689.44
  5. Step 5: Solve for x
    x = 10,708,952,689.44/115,175.60
  6. Step 6: Final answer
    x = 92,979.35

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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.