Home / 100,022.28-138,045.24-57,580.44

Finding the Fourth Proportional to 100,022.28, 138,045.24 and 57,580.44

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Solution

The fourth proportional to 100,022.28, 138,045.24 and 57,580.44 is: 79,469.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,022.28 : 138,045.24 = 57,580.44 : x
  2. Step 2: Convert to fraction form
    100,022.28/138,045.24 = 57,580.44/x
  3. Step 3: Cross multiply
    100,022.28x = 138,045.24 × 57,580.44
  4. Step 4: Simplify right side
    100,022.28x = 7,948,705,659.11
  5. Step 5: Solve for x
    x = 7,948,705,659.11/100,022.28
  6. Step 6: Final answer
    x = 79,469.35

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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.