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Finding the Fourth Proportional to 101,517.17, 140,047.20 and 65,718.72

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Solution

The fourth proportional to 101,517.17, 140,047.20 and 65,718.72 is: 90,661.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,517.17 : 140,047.20 = 65,718.72 : x
  2. Step 2: Convert to fraction form
    101,517.17/140,047.20 = 65,718.72/x
  3. Step 3: Cross multiply
    101,517.17x = 140,047.20 × 65,718.72
  4. Step 4: Simplify right side
    101,517.17x = 9,203,722,723.58
  5. Step 5: Solve for x
    x = 9,203,722,723.58/101,517.17
  6. Step 6: Final answer
    x = 90,661.74

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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.