Home / 170,700.60-256,050.90-86,719.80

Finding the Fourth Proportional to 170,700.60, 256,050.90 and 86,719.80

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Solution

The fourth proportional to 170,700.60, 256,050.90 and 86,719.80 is: 130,079.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,700.60 : 256,050.90 = 86,719.80 : x
  2. Step 2: Convert to fraction form
    170,700.60/256,050.90 = 86,719.80/x
  3. Step 3: Cross multiply
    170,700.60x = 256,050.90 × 86,719.80
  4. Step 4: Simplify right side
    170,700.60x = 22,204,682,837.82
  5. Step 5: Solve for x
    x = 22,204,682,837.82/170,700.60
  6. Step 6: Final answer
    x = 130,079.70

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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.