Home / 170,186.45-255,437.28-86,005.85

Finding the Fourth Proportional to 170,186.45, 255,437.28 and 86,005.85

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Solution

The fourth proportional to 170,186.45, 255,437.28 and 86,005.85 is: 129,088.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,186.45 : 255,437.28 = 86,005.85 : x
  2. Step 2: Convert to fraction form
    170,186.45/255,437.28 = 86,005.85/x
  3. Step 3: Cross multiply
    170,186.45x = 255,437.28 × 86,005.85
  4. Step 4: Simplify right side
    170,186.45x = 21,969,099,110.90
  5. Step 5: Solve for x
    x = 21,969,099,110.90/170,186.45
  6. Step 6: Final answer
    x = 129,088.42

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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.