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Finding the Fourth Proportional to 121,599.43, 167,800.23 and 67,887.85

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Solution

The fourth proportional to 121,599.43, 167,800.23 and 67,887.85 is: 93,681.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,599.43 : 167,800.23 = 67,887.85 : x
  2. Step 2: Convert to fraction form
    121,599.43/167,800.23 = 67,887.85/x
  3. Step 3: Cross multiply
    121,599.43x = 167,800.23 × 67,887.85
  4. Step 4: Simplify right side
    121,599.43x = 11,391,596,844.21
  5. Step 5: Solve for x
    x = 11,391,596,844.21/121,599.43
  6. Step 6: Final answer
    x = 93,681.33

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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.