Home / 100,546.25-138,755.30-55,228.30

Finding the Fourth Proportional to 100,546.25, 138,755.30 and 55,228.30

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Solution

The fourth proportional to 100,546.25, 138,755.30 and 55,228.30 is: 76,215.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,546.25 : 138,755.30 = 55,228.30 : x
  2. Step 2: Convert to fraction form
    100,546.25/138,755.30 = 55,228.30/x
  3. Step 3: Cross multiply
    100,546.25x = 138,755.30 × 55,228.30
  4. Step 4: Simplify right side
    100,546.25x = 7,663,218,711.96
  5. Step 5: Solve for x
    x = 7,663,218,711.96/100,546.25
  6. Step 6: Final answer
    x = 76,215.86

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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.