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Finding the Fourth Proportional to 101,691.25, 140,333.97 and 61,947.25

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Solution

The fourth proportional to 101,691.25, 140,333.97 and 61,947.25 is: 85,487.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,691.25 : 140,333.97 = 61,947.25 : x
  2. Step 2: Convert to fraction form
    101,691.25/140,333.97 = 61,947.25/x
  3. Step 3: Cross multiply
    101,691.25x = 140,333.97 × 61,947.25
  4. Step 4: Simplify right side
    101,691.25x = 8,693,303,213.35
  5. Step 5: Solve for x
    x = 8,693,303,213.35/101,691.25
  6. Step 6: Final answer
    x = 85,487.23

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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.