Home / 100,222.35-138,306.78-54,899.94

Finding the Fourth Proportional to 100,222.35, 138,306.78 and 54,899.94

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Solution

The fourth proportional to 100,222.35, 138,306.78 and 54,899.94 is: 75,761.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,222.35 : 138,306.78 = 54,899.94 : x
  2. Step 2: Convert to fraction form
    100,222.35/138,306.78 = 54,899.94/x
  3. Step 3: Cross multiply
    100,222.35x = 138,306.78 × 54,899.94
  4. Step 4: Simplify right side
    100,222.35x = 7,593,033,923.59
  5. Step 5: Solve for x
    x = 7,593,033,923.59/100,222.35
  6. Step 6: Final answer
    x = 75,761.88

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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.