Home / 99,613.13-137,466.72-57,171.96

Finding the Fourth Proportional to 99,613.13, 137,466.72 and 57,171.96

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Solution

The fourth proportional to 99,613.13, 137,466.72 and 57,171.96 is: 78,897.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,613.13 : 137,466.72 = 57,171.96 : x
  2. Step 2: Convert to fraction form
    99,613.13/137,466.72 = 57,171.96/x
  3. Step 3: Cross multiply
    99,613.13x = 137,466.72 × 57,171.96
  4. Step 4: Simplify right side
    99,613.13x = 7,859,241,817.17
  5. Step 5: Solve for x
    x = 7,859,241,817.17/99,613.13
  6. Step 6: Final answer
    x = 78,897.65

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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.