Home / 128,233.20-192,196.20-65,871.60

Finding the Fourth Proportional to 128,233.20, 192,196.20 and 65,871.60

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Solution

The fourth proportional to 128,233.20, 192,196.20 and 65,871.60 is: 98,728.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,233.20 : 192,196.20 = 65,871.60 : x
  2. Step 2: Convert to fraction form
    128,233.20/192,196.20 = 65,871.60/x
  3. Step 3: Cross multiply
    128,233.20x = 192,196.20 × 65,871.60
  4. Step 4: Simplify right side
    128,233.20x = 12,660,271,207.92
  5. Step 5: Solve for x
    x = 12,660,271,207.92/128,233.20
  6. Step 6: Final answer
    x = 98,728.50

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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.