Home / 138,519.35-191,148.46-80,371.59

Finding the Fourth Proportional to 138,519.35, 191,148.46 and 80,371.59

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Solution

The fourth proportional to 138,519.35, 191,148.46 and 80,371.59 is: 110,908.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,519.35 : 191,148.46 = 80,371.59 : x
  2. Step 2: Convert to fraction form
    138,519.35/191,148.46 = 80,371.59/x
  3. Step 3: Cross multiply
    138,519.35x = 191,148.46 × 80,371.59
  4. Step 4: Simplify right side
    138,519.35x = 15,362,906,473.52
  5. Step 5: Solve for x
    x = 15,362,906,473.52/138,519.35
  6. Step 6: Final answer
    x = 110,908.02

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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.