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Finding the Fourth Proportional to 121,625.76, 167,846.40 and 67,908.96

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Solution

The fourth proportional to 121,625.76, 167,846.40 and 67,908.96 is: 93,715.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,625.76 : 167,846.40 = 67,908.96 : x
  2. Step 2: Convert to fraction form
    121,625.76/167,846.40 = 67,908.96/x
  3. Step 3: Cross multiply
    121,625.76x = 167,846.40 × 67,908.96
  4. Step 4: Simplify right side
    121,625.76x = 11,398,274,463.74
  5. Step 5: Solve for x
    x = 11,398,274,463.74/121,625.76
  6. Step 6: Final answer
    x = 93,715.96

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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.