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Finding the Fourth Proportional to 115,616.75, 159,555.76 and 67,218.44

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Solution

The fourth proportional to 115,616.75, 159,555.76 and 67,218.44 is: 92,764.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,616.75 : 159,555.76 = 67,218.44 : x
  2. Step 2: Convert to fraction form
    115,616.75/159,555.76 = 67,218.44/x
  3. Step 3: Cross multiply
    115,616.75x = 159,555.76 × 67,218.44
  4. Step 4: Simplify right side
    115,616.75x = 10,725,088,314.39
  5. Step 5: Solve for x
    x = 10,725,088,314.39/115,616.75
  6. Step 6: Final answer
    x = 92,764.14

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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.