Home / 100,512.66-138,727.98-58,065.42

Finding the Fourth Proportional to 100,512.66, 138,727.98 and 58,065.42

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Solution

The fourth proportional to 100,512.66, 138,727.98 and 58,065.42 is: 80,142.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,512.66 : 138,727.98 = 58,065.42 : x
  2. Step 2: Convert to fraction form
    100,512.66/138,727.98 = 58,065.42/x
  3. Step 3: Cross multiply
    100,512.66x = 138,727.98 × 58,065.42
  4. Step 4: Simplify right side
    100,512.66x = 8,055,298,424.45
  5. Step 5: Solve for x
    x = 8,055,298,424.45/100,512.66
  6. Step 6: Final answer
    x = 80,142.13

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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.