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Finding the Fourth Proportional to 121,123.68, 167,153.40 and 67,414.20

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Solution

The fourth proportional to 121,123.68, 167,153.40 and 67,414.20 is: 93,033.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,123.68 : 167,153.40 = 67,414.20 : x
  2. Step 2: Convert to fraction form
    121,123.68/167,153.40 = 67,414.20/x
  3. Step 3: Cross multiply
    121,123.68x = 167,153.40 × 67,414.20
  4. Step 4: Simplify right side
    121,123.68x = 11,268,512,738.28
  5. Step 5: Solve for x
    x = 11,268,512,738.28/121,123.68
  6. Step 6: Final answer
    x = 93,033.11

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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.