Home / 102,178.35-140,990.49-56,855.61

Finding the Fourth Proportional to 102,178.35, 140,990.49 and 56,855.61

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Solution

The fourth proportional to 102,178.35, 140,990.49 and 56,855.61 is: 78,452.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,178.35 : 140,990.49 = 56,855.61 : x
  2. Step 2: Convert to fraction form
    102,178.35/140,990.49 = 56,855.61/x
  3. Step 3: Cross multiply
    102,178.35x = 140,990.49 × 56,855.61
  4. Step 4: Simplify right side
    102,178.35x = 8,016,100,313.15
  5. Step 5: Solve for x
    x = 8,016,100,313.15/102,178.35
  6. Step 6: Final answer
    x = 78,452.04

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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.