Home / 100,974.58-139,301.10-60,115.84

Finding the Fourth Proportional to 100,974.58, 139,301.10 and 60,115.84

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Solution

The fourth proportional to 100,974.58, 139,301.10 and 60,115.84 is: 82,933.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,974.58 : 139,301.10 = 60,115.84 : x
  2. Step 2: Convert to fraction form
    100,974.58/139,301.10 = 60,115.84/x
  3. Step 3: Cross multiply
    100,974.58x = 139,301.10 × 60,115.84
  4. Step 4: Simplify right side
    100,974.58x = 8,374,202,639.42
  5. Step 5: Solve for x
    x = 8,374,202,639.42/100,974.58
  6. Step 6: Final answer
    x = 82,933.77

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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.