Home / 170,680.16-255,820.68-128,424.59

Finding the Fourth Proportional to 170,680.16, 255,820.68 and 128,424.59

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Solution

The fourth proportional to 170,680.16, 255,820.68 and 128,424.59 is: 192,486.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,680.16 : 255,820.68 = 128,424.59 : x
  2. Step 2: Convert to fraction form
    170,680.16/255,820.68 = 128,424.59/x
  3. Step 3: Cross multiply
    170,680.16x = 255,820.68 × 128,424.59
  4. Step 4: Simplify right side
    170,680.16x = 32,853,665,622.75
  5. Step 5: Solve for x
    x = 32,853,665,622.75/170,680.16
  6. Step 6: Final answer
    x = 192,486.73

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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.