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Finding the Fourth Proportional to 121,320.80, 167,420.42 and 67,604.64

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Solution

The fourth proportional to 121,320.80, 167,420.42 and 67,604.64 is: 93,293.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,320.80 : 167,420.42 = 67,604.64 : x
  2. Step 2: Convert to fraction form
    121,320.80/167,420.42 = 67,604.64/x
  3. Step 3: Cross multiply
    121,320.80x = 167,420.42 × 67,604.64
  4. Step 4: Simplify right side
    121,320.80x = 11,318,397,222.75
  5. Step 5: Solve for x
    x = 11,318,397,222.75/121,320.80
  6. Step 6: Final answer
    x = 93,293.13

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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.