Home / 185,556.60-278,334.90-85,687.25

Finding the Fourth Proportional to 185,556.60, 278,334.90 and 85,687.25

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Solution

The fourth proportional to 185,556.60, 278,334.90 and 85,687.25 is: 128,530.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,556.60 : 278,334.90 = 85,687.25 : x
  2. Step 2: Convert to fraction form
    185,556.60/278,334.90 = 85,687.25/x
  3. Step 3: Cross multiply
    185,556.60x = 278,334.90 × 85,687.25
  4. Step 4: Simplify right side
    185,556.60x = 23,849,750,768.35
  5. Step 5: Solve for x
    x = 23,849,750,768.35/185,556.60
  6. Step 6: Final answer
    x = 128,530.87

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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.