Home / 100,418.24-138,519.60-62,626.88

Finding the Fourth Proportional to 100,418.24, 138,519.60 and 62,626.88

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Solution

The fourth proportional to 100,418.24, 138,519.60 and 62,626.88 is: 86,389.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,418.24 : 138,519.60 = 62,626.88 : x
  2. Step 2: Convert to fraction form
    100,418.24/138,519.60 = 62,626.88/x
  3. Step 3: Cross multiply
    100,418.24x = 138,519.60 × 62,626.88
  4. Step 4: Simplify right side
    100,418.24x = 8,675,050,366.85
  5. Step 5: Solve for x
    x = 8,675,050,366.85/100,418.24
  6. Step 6: Final answer
    x = 86,389.19

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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.