Home / 128,340.64-192,381.68-53,502.20

Finding the Fourth Proportional to 128,340.64, 192,381.68 and 53,502.20

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Solution

The fourth proportional to 128,340.64, 192,381.68 and 53,502.20 is: 80,199.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,340.64 : 192,381.68 = 53,502.20 : x
  2. Step 2: Convert to fraction form
    128,340.64/192,381.68 = 53,502.20/x
  3. Step 3: Cross multiply
    128,340.64x = 192,381.68 × 53,502.20
  4. Step 4: Simplify right side
    128,340.64x = 10,292,843,119.70
  5. Step 5: Solve for x
    x = 10,292,843,119.70/128,340.64
  6. Step 6: Final answer
    x = 80,199.41

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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.