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Finding the Fourth Proportional to 121,454.80, 167,607.85 and 67,743.28

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Solution

The fourth proportional to 121,454.80, 167,607.85 and 67,743.28 is: 93,485.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,454.80 : 167,607.85 = 67,743.28 : x
  2. Step 2: Convert to fraction form
    121,454.80/167,607.85 = 67,743.28/x
  3. Step 3: Cross multiply
    121,454.80x = 167,607.85 × 67,743.28
  4. Step 4: Simplify right side
    121,454.80x = 11,354,305,512.75
  5. Step 5: Solve for x
    x = 11,354,305,512.75/121,454.80
  6. Step 6: Final answer
    x = 93,485.85

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1.5x scale

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.