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Finding the Fourth Proportional to 121,251.33, 167,333.55 and 72,868.06

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Solution

The fourth proportional to 121,251.33, 167,333.55 and 72,868.06 is: 100,561.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,251.33 : 167,333.55 = 72,868.06 : x
  2. Step 2: Convert to fraction form
    121,251.33/167,333.55 = 72,868.06/x
  3. Step 3: Cross multiply
    121,251.33x = 167,333.55 × 72,868.06
  4. Step 4: Simplify right side
    121,251.33x = 12,193,270,156.07
  5. Step 5: Solve for x
    x = 12,193,270,156.07/121,251.33
  6. Step 6: Final answer
    x = 100,561.95

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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.