Home / 100,469.04-138,686.22-75,391.44

Finding the Fourth Proportional to 100,469.04, 138,686.22 and 75,391.44

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Solution

The fourth proportional to 100,469.04, 138,686.22 and 75,391.44 is: 104,069.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,469.04 : 138,686.22 = 75,391.44 : x
  2. Step 2: Convert to fraction form
    100,469.04/138,686.22 = 75,391.44/x
  3. Step 3: Cross multiply
    100,469.04x = 138,686.22 × 75,391.44
  4. Step 4: Simplify right side
    100,469.04x = 10,455,753,833.96
  5. Step 5: Solve for x
    x = 10,455,753,833.96/100,469.04
  6. Step 6: Final answer
    x = 104,069.41

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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.