Home / 100,211.24-138,295.14-55,499.24

Finding the Fourth Proportional to 100,211.24, 138,295.14 and 55,499.24

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Solution

The fourth proportional to 100,211.24, 138,295.14 and 55,499.24 is: 76,590.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,211.24 : 138,295.14 = 55,499.24 : x
  2. Step 2: Convert to fraction form
    100,211.24/138,295.14 = 55,499.24/x
  3. Step 3: Cross multiply
    100,211.24x = 138,295.14 × 55,499.24
  4. Step 4: Simplify right side
    100,211.24x = 7,675,275,165.69
  5. Step 5: Solve for x
    x = 7,675,275,165.69/100,211.24
  6. Step 6: Final answer
    x = 76,590.96

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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.