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Finding the Fourth Proportional to 158,514.76, 218,750.39 and 86,893.24

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Solution

The fourth proportional to 158,514.76, 218,750.39 and 86,893.24 is: 119,912.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,514.76 : 218,750.39 = 86,893.24 : x
  2. Step 2: Convert to fraction form
    158,514.76/218,750.39 = 86,893.24/x
  3. Step 3: Cross multiply
    158,514.76x = 218,750.39 × 86,893.24
  4. Step 4: Simplify right side
    158,514.76x = 19,007,930,138.36
  5. Step 5: Solve for x
    x = 19,007,930,138.36/158,514.76
  6. Step 6: Final answer
    x = 119,912.68

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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.