Home / 156,002.60-234,003.90-85,143.80

Finding the Fourth Proportional to 156,002.60, 234,003.90 and 85,143.80

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Solution

The fourth proportional to 156,002.60, 234,003.90 and 85,143.80 is: 127,715.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,002.60 : 234,003.90 = 85,143.80 : x
  2. Step 2: Convert to fraction form
    156,002.60/234,003.90 = 85,143.80/x
  3. Step 3: Cross multiply
    156,002.60x = 234,003.90 × 85,143.80
  4. Step 4: Simplify right side
    156,002.60x = 19,923,981,260.82
  5. Step 5: Solve for x
    x = 19,923,981,260.82/156,002.60
  6. Step 6: Final answer
    x = 127,715.70

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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.