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Finding the Fourth Proportional to 170,400.60, 255,600.90 and 120,634.20

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Solution

The fourth proportional to 170,400.60, 255,600.90 and 120,634.20 is: 180,951.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,400.60 : 255,600.90 = 120,634.20 : x
  2. Step 2: Convert to fraction form
    170,400.60/255,600.90 = 120,634.20/x
  3. Step 3: Cross multiply
    170,400.60x = 255,600.90 × 120,634.20
  4. Step 4: Simplify right side
    170,400.60x = 30,834,210,090.78
  5. Step 5: Solve for x
    x = 30,834,210,090.78/170,400.60
  6. Step 6: Final answer
    x = 180,951.30

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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.