Home / 170,856.03-256,138.23-120,778.59

Finding the Fourth Proportional to 170,856.03, 256,138.23 and 120,778.59

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Solution

The fourth proportional to 170,856.03, 256,138.23 and 120,778.59 is: 181,064.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,856.03 : 256,138.23 = 120,778.59 : x
  2. Step 2: Convert to fraction form
    170,856.03/256,138.23 = 120,778.59/x
  3. Step 3: Cross multiply
    170,856.03x = 256,138.23 × 120,778.59
  4. Step 4: Simplify right side
    170,856.03x = 30,936,014,264.50
  5. Step 5: Solve for x
    x = 30,936,014,264.50/170,856.03
  6. Step 6: Final answer
    x = 181,064.81

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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.