Home / 84,672.20-126,878.70-80,006.60

Finding the Fourth Proportional to 84,672.20, 126,878.70 and 80,006.60

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Solution

The fourth proportional to 84,672.20, 126,878.70 and 80,006.60 is: 119,887.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,672.20 : 126,878.70 = 80,006.60 : x
  2. Step 2: Convert to fraction form
    84,672.20/126,878.70 = 80,006.60/x
  3. Step 3: Cross multiply
    84,672.20x = 126,878.70 × 80,006.60
  4. Step 4: Simplify right side
    84,672.20x = 10,151,133,399.42
  5. Step 5: Solve for x
    x = 10,151,133,399.42/84,672.20
  6. Step 6: Final answer
    x = 119,887.44

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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.