Home / 205,077.20-307,385.40-105,198.80

Finding the Fourth Proportional to 205,077.20, 307,385.40 and 105,198.80

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Solution

The fourth proportional to 205,077.20, 307,385.40 and 105,198.80 is: 157,680.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,077.20 : 307,385.40 = 105,198.80 : x
  2. Step 2: Convert to fraction form
    205,077.20/307,385.40 = 105,198.80/x
  3. Step 3: Cross multiply
    205,077.20x = 307,385.40 × 105,198.80
  4. Step 4: Simplify right side
    205,077.20x = 32,336,575,217.52
  5. Step 5: Solve for x
    x = 32,336,575,217.52/205,077.20
  6. Step 6: Final answer
    x = 157,680.01

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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.