Home / 100,324.38-138,449.21-55,006.50

Finding the Fourth Proportional to 100,324.38, 138,449.21 and 55,006.50

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Solution

The fourth proportional to 100,324.38, 138,449.21 and 55,006.50 is: 75,909.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,324.38 : 138,449.21 = 55,006.50 : x
  2. Step 2: Convert to fraction form
    100,324.38/138,449.21 = 55,006.50/x
  3. Step 3: Cross multiply
    100,324.38x = 138,449.21 × 55,006.50
  4. Step 4: Simplify right side
    100,324.38x = 7,615,606,194.83
  5. Step 5: Solve for x
    x = 7,615,606,194.83/100,324.38
  6. Step 6: Final answer
    x = 75,909.83

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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.