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Finding the Fourth Proportional to 84,673.20, 126,880.20 and 80,007.60

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Solution

The fourth proportional to 84,673.20, 126,880.20 and 80,007.60 is: 119,888.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,673.20 : 126,880.20 = 80,007.60 : x
  2. Step 2: Convert to fraction form
    84,673.20/126,880.20 = 80,007.60/x
  3. Step 3: Cross multiply
    84,673.20x = 126,880.20 × 80,007.60
  4. Step 4: Simplify right side
    84,673.20x = 10,151,380,289.52
  5. Step 5: Solve for x
    x = 10,151,380,289.52/84,673.20
  6. Step 6: Final answer
    x = 119,888.94

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1.5x scale

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.