Home / 159,306.88-219,841.82-87,685.36

Finding the Fourth Proportional to 159,306.88, 219,841.82 and 87,685.36

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Solution

The fourth proportional to 159,306.88, 219,841.82 and 87,685.36 is: 121,004.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,306.88 : 219,841.82 = 87,685.36 : x
  2. Step 2: Convert to fraction form
    159,306.88/219,841.82 = 87,685.36/x
  3. Step 3: Cross multiply
    159,306.88x = 219,841.82 × 87,685.36
  4. Step 4: Simplify right side
    159,306.88x = 19,276,909,129.76
  5. Step 5: Solve for x
    x = 19,276,909,129.76/159,306.88
  6. Step 6: Final answer
    x = 121,004.88

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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.