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Finding the Fourth Proportional to 101,766.71, 140,275.79 and 80,221.32

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Solution

The fourth proportional to 101,766.71, 140,275.79 and 80,221.32 is: 110,577.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,766.71 : 140,275.79 = 80,221.32 : x
  2. Step 2: Convert to fraction form
    101,766.71/140,275.79 = 80,221.32/x
  3. Step 3: Cross multiply
    101,766.71x = 140,275.79 × 80,221.32
  4. Step 4: Simplify right side
    101,766.71x = 11,253,109,037.84
  5. Step 5: Solve for x
    x = 11,253,109,037.84/101,766.71
  6. Step 6: Final answer
    x = 110,577.51

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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.