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Finding the Fourth Proportional to 79,314.19, 118,974.53 and 20,151.38

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Solution

The fourth proportional to 79,314.19, 118,974.53 and 20,151.38 is: 30,227.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,314.19 : 118,974.53 = 20,151.38 : x
  2. Step 2: Convert to fraction form
    79,314.19/118,974.53 = 20,151.38/x
  3. Step 3: Cross multiply
    79,314.19x = 118,974.53 × 20,151.38
  4. Step 4: Simplify right side
    79,314.19x = 2,397,501,312.17
  5. Step 5: Solve for x
    x = 2,397,501,312.17/79,314.19
  6. Step 6: Final answer
    x = 30,227.90

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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.