Home / 170,811.38-256,373.30-86,629.64

Finding the Fourth Proportional to 170,811.38, 256,373.30 and 86,629.64

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Solution

The fourth proportional to 170,811.38, 256,373.30 and 86,629.64 is: 130,023.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,811.38 : 256,373.30 = 86,629.64 : x
  2. Step 2: Convert to fraction form
    170,811.38/256,373.30 = 86,629.64/x
  3. Step 3: Cross multiply
    170,811.38x = 256,373.30 × 86,629.64
  4. Step 4: Simplify right side
    170,811.38x = 22,209,524,969.60
  5. Step 5: Solve for x
    x = 22,209,524,969.60/170,811.38
  6. Step 6: Final answer
    x = 130,023.69

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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.