Home / 108,519.52-162,781.44-71,316.76

Finding the Fourth Proportional to 108,519.52, 162,781.44 and 71,316.76

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Solution

The fourth proportional to 108,519.52, 162,781.44 and 71,316.76 is: 106,976.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,519.52 : 162,781.44 = 71,316.76 : x
  2. Step 2: Convert to fraction form
    108,519.52/162,781.44 = 71,316.76/x
  3. Step 3: Cross multiply
    108,519.52x = 162,781.44 × 71,316.76
  4. Step 4: Simplify right side
    108,519.52x = 11,609,044,888.93
  5. Step 5: Solve for x
    x = 11,609,044,888.93/108,519.52
  6. Step 6: Final answer
    x = 106,976.56

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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.