Home / 84,845.20-127,267.80-80,957.20

Finding the Fourth Proportional to 84,845.20, 127,267.80 and 80,957.20

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Solution

The fourth proportional to 84,845.20, 127,267.80 and 80,957.20 is: 121,435.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,845.20 : 127,267.80 = 80,957.20 : x
  2. Step 2: Convert to fraction form
    84,845.20/127,267.80 = 80,957.20/x
  3. Step 3: Cross multiply
    84,845.20x = 127,267.80 × 80,957.20
  4. Step 4: Simplify right side
    84,845.20x = 10,303,244,738.16
  5. Step 5: Solve for x
    x = 10,303,244,738.16/84,845.20
  6. Step 6: Final answer
    x = 121,435.80

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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.