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Finding the Fourth Proportional to 159,158.12, 219,634.88 and 87,536.97

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Solution

The fourth proportional to 159,158.12, 219,634.88 and 87,536.97 is: 120,799.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,158.12 : 219,634.88 = 87,536.97 : x
  2. Step 2: Convert to fraction form
    159,158.12/219,634.88 = 87,536.97/x
  3. Step 3: Cross multiply
    159,158.12x = 219,634.88 × 87,536.97
  4. Step 4: Simplify right side
    159,158.12x = 19,226,171,463.83
  5. Step 5: Solve for x
    x = 19,226,171,463.83/159,158.12
  6. Step 6: Final answer
    x = 120,799.19

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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.