Home / 127,899.80-191,936.10-83,418.20

Finding the Fourth Proportional to 127,899.80, 191,936.10 and 83,418.20

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Solution

The fourth proportional to 127,899.80, 191,936.10 and 83,418.20 is: 125,183.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,899.80 : 191,936.10 = 83,418.20 : x
  2. Step 2: Convert to fraction form
    127,899.80/191,936.10 = 83,418.20/x
  3. Step 3: Cross multiply
    127,899.80x = 191,936.10 × 83,418.20
  4. Step 4: Simplify right side
    127,899.80x = 16,010,963,977.02
  5. Step 5: Solve for x
    x = 16,010,963,977.02/127,899.80
  6. Step 6: Final answer
    x = 125,183.65

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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.