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Finding the Fourth Proportional to 167,613.30, 251,253.87 and 78,707.65

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Solution

The fourth proportional to 167,613.30, 251,253.87 and 78,707.65 is: 117,983.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,613.30 : 251,253.87 = 78,707.65 : x
  2. Step 2: Convert to fraction form
    167,613.30/251,253.87 = 78,707.65/x
  3. Step 3: Cross multiply
    167,613.30x = 251,253.87 × 78,707.65
  4. Step 4: Simplify right side
    167,613.30x = 19,775,601,032.97
  5. Step 5: Solve for x
    x = 19,775,601,032.97/167,613.30
  6. Step 6: Final answer
    x = 117,983.49

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.