Home / 215,989.20-323,830.08-82,756.80

Finding the Fourth Proportional to 215,989.20, 323,830.08 and 82,756.80

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Solution

The fourth proportional to 215,989.20, 323,830.08 and 82,756.80 is: 124,076.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,989.20 : 323,830.08 = 82,756.80 : x
  2. Step 2: Convert to fraction form
    215,989.20/323,830.08 = 82,756.80/x
  3. Step 3: Cross multiply
    215,989.20x = 323,830.08 × 82,756.80
  4. Step 4: Simplify right side
    215,989.20x = 26,799,141,164.54
  5. Step 5: Solve for x
    x = 26,799,141,164.54/215,989.20
  6. Step 6: Final answer
    x = 124,076.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.