Home / 128,169.14-192,254.16-39,422.04

Finding the Fourth Proportional to 128,169.14, 192,254.16 and 39,422.04

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Solution

The fourth proportional to 128,169.14, 192,254.16 and 39,422.04 is: 59,133.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,169.14 : 192,254.16 = 39,422.04 : x
  2. Step 2: Convert to fraction form
    128,169.14/192,254.16 = 39,422.04/x
  3. Step 3: Cross multiply
    128,169.14x = 192,254.16 × 39,422.04
  4. Step 4: Simplify right side
    128,169.14x = 7,579,051,472.25
  5. Step 5: Solve for x
    x = 7,579,051,472.25/128,169.14
  6. Step 6: Final answer
    x = 59,133.20

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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.