Home / 127,919.80-191,966.10-83,438.20

Finding the Fourth Proportional to 127,919.80, 191,966.10 and 83,438.20

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Solution

The fourth proportional to 127,919.80, 191,966.10 and 83,438.20 is: 125,213.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,919.80 : 191,966.10 = 83,438.20 : x
  2. Step 2: Convert to fraction form
    127,919.80/191,966.10 = 83,438.20/x
  3. Step 3: Cross multiply
    127,919.80x = 191,966.10 × 83,438.20
  4. Step 4: Simplify right side
    127,919.80x = 16,017,305,845.02
  5. Step 5: Solve for x
    x = 16,017,305,845.02/127,919.80
  6. Step 6: Final answer
    x = 125,213.66

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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.