Home / 84,891.20-127,077.60-66,228.80

Finding the Fourth Proportional to 84,891.20, 127,077.60 and 66,228.80

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Solution

The fourth proportional to 84,891.20, 127,077.60 and 66,228.80 is: 99,140.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,891.20 : 127,077.60 = 66,228.80 : x
  2. Step 2: Convert to fraction form
    84,891.20/127,077.60 = 66,228.80/x
  3. Step 3: Cross multiply
    84,891.20x = 127,077.60 × 66,228.80
  4. Step 4: Simplify right side
    84,891.20x = 8,416,196,954.88
  5. Step 5: Solve for x
    x = 8,416,196,954.88/84,891.20
  6. Step 6: Final answer
    x = 99,140.98

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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.