Home / 170,129.70-255,085.20-70,329.60

Finding the Fourth Proportional to 170,129.70, 255,085.20 and 70,329.60

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Solution

The fourth proportional to 170,129.70, 255,085.20 and 70,329.60 is: 105,449.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,129.70 : 255,085.20 = 70,329.60 : x
  2. Step 2: Convert to fraction form
    170,129.70/255,085.20 = 70,329.60/x
  3. Step 3: Cross multiply
    170,129.70x = 255,085.20 × 70,329.60
  4. Step 4: Simplify right side
    170,129.70x = 17,940,040,081.92
  5. Step 5: Solve for x
    x = 17,940,040,081.92/170,129.70
  6. Step 6: Final answer
    x = 105,449.20

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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.