Home / 100,982.28-139,356.10-58,565.96

Finding the Fourth Proportional to 100,982.28, 139,356.10 and 58,565.96

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Solution

The fourth proportional to 100,982.28, 139,356.10 and 58,565.96 is: 80,821.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,982.28 : 139,356.10 = 58,565.96 : x
  2. Step 2: Convert to fraction form
    100,982.28/139,356.10 = 58,565.96/x
  3. Step 3: Cross multiply
    100,982.28x = 139,356.10 × 58,565.96
  4. Step 4: Simplify right side
    100,982.28x = 8,161,523,778.36
  5. Step 5: Solve for x
    x = 8,161,523,778.36/100,982.28
  6. Step 6: Final answer
    x = 80,821.35

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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.