Home / 100,539.24-138,727.56-58,101.72

Finding the Fourth Proportional to 100,539.24, 138,727.56 and 58,101.72

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Solution

The fourth proportional to 100,539.24, 138,727.56 and 58,101.72 is: 80,170.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,539.24 : 138,727.56 = 58,101.72 : x
  2. Step 2: Convert to fraction form
    100,539.24/138,727.56 = 58,101.72/x
  3. Step 3: Cross multiply
    100,539.24x = 138,727.56 × 58,101.72
  4. Step 4: Simplify right side
    100,539.24x = 8,060,309,847.40
  5. Step 5: Solve for x
    x = 8,060,309,847.40/100,539.24
  6. Step 6: Final answer
    x = 80,170.79

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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.