Home / 170,647.38-255,771.75-128,391.70

Finding the Fourth Proportional to 170,647.38, 255,771.75 and 128,391.70

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Solution

The fourth proportional to 170,647.38, 255,771.75 and 128,391.70 is: 192,437.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,647.38 : 255,771.75 = 128,391.70 : x
  2. Step 2: Convert to fraction form
    170,647.38/255,771.75 = 128,391.70/x
  3. Step 3: Cross multiply
    170,647.38x = 255,771.75 × 128,391.70
  4. Step 4: Simplify right side
    170,647.38x = 32,838,969,794.48
  5. Step 5: Solve for x
    x = 32,838,969,794.48/170,647.38
  6. Step 6: Final answer
    x = 192,437.59

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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.