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Finding the Fourth Proportional to 115,808.78, 173,743.11 and 67,817.91

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Solution

The fourth proportional to 115,808.78, 173,743.11 and 67,817.91 is: 101,744.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,808.78 : 173,743.11 = 67,817.91 : x
  2. Step 2: Convert to fraction form
    115,808.78/173,743.11 = 67,817.91/x
  3. Step 3: Cross multiply
    115,808.78x = 173,743.11 × 67,817.91
  4. Step 4: Simplify right side
    115,808.78x = 11,782,895,502.95
  5. Step 5: Solve for x
    x = 11,782,895,502.95/115,808.78
  6. Step 6: Final answer
    x = 101,744.41

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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.