Home / 100,339.48-138,462.06-55,016.92

Finding the Fourth Proportional to 100,339.48, 138,462.06 and 55,016.92

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Solution

The fourth proportional to 100,339.48, 138,462.06 and 55,016.92 is: 75,919.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,339.48 : 138,462.06 = 55,016.92 : x
  2. Step 2: Convert to fraction form
    100,339.48/138,462.06 = 55,016.92/x
  3. Step 3: Cross multiply
    100,339.48x = 138,462.06 × 55,016.92
  4. Step 4: Simplify right side
    100,339.48x = 7,617,756,078.06
  5. Step 5: Solve for x
    x = 7,617,756,078.06/100,339.48
  6. Step 6: Final answer
    x = 75,919.83

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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.