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Finding the Fourth Proportional to 121,124.97, 167,151.15 and 67,409.01

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Solution

The fourth proportional to 121,124.97, 167,151.15 and 67,409.01 is: 93,023.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,124.97 : 167,151.15 = 67,409.01 : x
  2. Step 2: Convert to fraction form
    121,124.97/167,151.15 = 67,409.01/x
  3. Step 3: Cross multiply
    121,124.97x = 167,151.15 × 67,409.01
  4. Step 4: Simplify right side
    121,124.97x = 11,267,493,541.86
  5. Step 5: Solve for x
    x = 11,267,493,541.86/121,124.97
  6. Step 6: Final answer
    x = 93,023.71

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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.