Home / 100,222.02-138,306.26-54,902.78

Finding the Fourth Proportional to 100,222.02, 138,306.26 and 54,902.78

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Solution

The fourth proportional to 100,222.02, 138,306.26 and 54,902.78 is: 75,765.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,222.02 : 138,306.26 = 54,902.78 : x
  2. Step 2: Convert to fraction form
    100,222.02/138,306.26 = 54,902.78/x
  3. Step 3: Cross multiply
    100,222.02x = 138,306.26 × 54,902.78
  4. Step 4: Simplify right side
    100,222.02x = 7,593,398,165.40
  5. Step 5: Solve for x
    x = 7,593,398,165.40/100,222.02
  6. Step 6: Final answer
    x = 75,765.77

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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.