Home / 100,727.15-138,996.61-58,292.06

Finding the Fourth Proportional to 100,727.15, 138,996.61 and 58,292.06

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Solution

The fourth proportional to 100,727.15, 138,996.61 and 58,292.06 is: 80,439.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,727.15 : 138,996.61 = 58,292.06 : x
  2. Step 2: Convert to fraction form
    100,727.15/138,996.61 = 58,292.06/x
  3. Step 3: Cross multiply
    100,727.15x = 138,996.61 × 58,292.06
  4. Step 4: Simplify right side
    100,727.15x = 8,102,397,889.20
  5. Step 5: Solve for x
    x = 8,102,397,889.20/100,727.15
  6. Step 6: Final answer
    x = 80,439.07

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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.