Home / 192,665.20-288,997.80-121,806.40

Finding the Fourth Proportional to 192,665.20, 288,997.80 and 121,806.40

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Solution

The fourth proportional to 192,665.20, 288,997.80 and 121,806.40 is: 182,709.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,665.20 : 288,997.80 = 121,806.40 : x
  2. Step 2: Convert to fraction form
    192,665.20/288,997.80 = 121,806.40/x
  3. Step 3: Cross multiply
    192,665.20x = 288,997.80 × 121,806.40
  4. Step 4: Simplify right side
    192,665.20x = 35,201,781,625.92
  5. Step 5: Solve for x
    x = 35,201,781,625.92/192,665.20
  6. Step 6: Final answer
    x = 182,709.60

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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.