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Finding the Fourth Proportional to 158,175.29, 236,964.87 and 78,119.55

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Solution

The fourth proportional to 158,175.29, 236,964.87 and 78,119.55 is: 117,032.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,175.29 : 236,964.87 = 78,119.55 : x
  2. Step 2: Convert to fraction form
    158,175.29/236,964.87 = 78,119.55/x
  3. Step 3: Cross multiply
    158,175.29x = 236,964.87 × 78,119.55
  4. Step 4: Simplify right side
    158,175.29x = 18,511,589,010.21
  5. Step 5: Solve for x
    x = 18,511,589,010.21/158,175.29
  6. Step 6: Final answer
    x = 117,032.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.