Home / 84,945.60-127,418.40-80,863.20

Finding the Fourth Proportional to 84,945.60, 127,418.40 and 80,863.20

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Solution

The fourth proportional to 84,945.60, 127,418.40 and 80,863.20 is: 121,294.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,945.60 : 127,418.40 = 80,863.20 : x
  2. Step 2: Convert to fraction form
    84,945.60/127,418.40 = 80,863.20/x
  3. Step 3: Cross multiply
    84,945.60x = 127,418.40 × 80,863.20
  4. Step 4: Simplify right side
    84,945.60x = 10,303,459,562.88
  5. Step 5: Solve for x
    x = 10,303,459,562.88/84,945.60
  6. Step 6: Final answer
    x = 121,294.80

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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.