Home / 123,546.75-170,512.82-78,228.95

Finding the Fourth Proportional to 123,546.75, 170,512.82 and 78,228.95

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Solution

The fourth proportional to 123,546.75, 170,512.82 and 78,228.95 is: 107,967.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,546.75 : 170,512.82 = 78,228.95 : x
  2. Step 2: Convert to fraction form
    123,546.75/170,512.82 = 78,228.95/x
  3. Step 3: Cross multiply
    123,546.75x = 170,512.82 × 78,228.95
  4. Step 4: Simplify right side
    123,546.75x = 13,339,037,626.43
  5. Step 5: Solve for x
    x = 13,339,037,626.43/123,546.75
  6. Step 6: Final answer
    x = 107,967.53

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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.