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Finding the Fourth Proportional to 101,766.84, 140,275.97 and 80,221.45

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Solution

The fourth proportional to 101,766.84, 140,275.97 and 80,221.45 is: 110,577.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,766.84 : 140,275.97 = 80,221.45 : x
  2. Step 2: Convert to fraction form
    101,766.84/140,275.97 = 80,221.45/x
  3. Step 3: Cross multiply
    101,766.84x = 140,275.97 × 80,221.45
  4. Step 4: Simplify right side
    101,766.84x = 11,253,140,611.07
  5. Step 5: Solve for x
    x = 11,253,140,611.07/101,766.84
  6. Step 6: Final answer
    x = 110,577.68

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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.