Home / 127,974.80-191,962.20-85,984.40

Finding the Fourth Proportional to 127,974.80, 191,962.20 and 85,984.40

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Solution

The fourth proportional to 127,974.80, 191,962.20 and 85,984.40 is: 128,976.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,974.80 : 191,962.20 = 85,984.40 : x
  2. Step 2: Convert to fraction form
    127,974.80/191,962.20 = 85,984.40/x
  3. Step 3: Cross multiply
    127,974.80x = 191,962.20 × 85,984.40
  4. Step 4: Simplify right side
    127,974.80x = 16,505,754,589.68
  5. Step 5: Solve for x
    x = 16,505,754,589.68/127,974.80
  6. Step 6: Final answer
    x = 128,976.60

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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.