Home / 185,517.20-278,429.40-85,830.80

Finding the Fourth Proportional to 185,517.20, 278,429.40 and 85,830.80

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Solution

The fourth proportional to 185,517.20, 278,429.40 and 85,830.80 is: 128,817.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,517.20 : 278,429.40 = 85,830.80 : x
  2. Step 2: Convert to fraction form
    185,517.20/278,429.40 = 85,830.80/x
  3. Step 3: Cross multiply
    185,517.20x = 278,429.40 × 85,830.80
  4. Step 4: Simplify right side
    185,517.20x = 23,897,818,145.52
  5. Step 5: Solve for x
    x = 23,897,818,145.52/185,517.20
  6. Step 6: Final answer
    x = 128,817.26

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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.