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Finding the Fourth Proportional to 121,385.44, 167,505.60 and 66,946.56

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Solution

The fourth proportional to 121,385.44, 167,505.60 and 66,946.56 is: 92,382.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,385.44 : 167,505.60 = 66,946.56 : x
  2. Step 2: Convert to fraction form
    121,385.44/167,505.60 = 66,946.56/x
  3. Step 3: Cross multiply
    121,385.44x = 167,505.60 × 66,946.56
  4. Step 4: Simplify right side
    121,385.44x = 11,213,923,700.74
  5. Step 5: Solve for x
    x = 11,213,923,700.74/121,385.44
  6. Step 6: Final answer
    x = 92,382.77

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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.