Home / 129,185.12-192,647.14-128,004.08

Finding the Fourth Proportional to 129,185.12, 192,647.14 and 128,004.08

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Solution

The fourth proportional to 129,185.12, 192,647.14 and 128,004.08 is: 190,885.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,185.12 : 192,647.14 = 128,004.08 : x
  2. Step 2: Convert to fraction form
    129,185.12/192,647.14 = 128,004.08/x
  3. Step 3: Cross multiply
    129,185.12x = 192,647.14 × 128,004.08
  4. Step 4: Simplify right side
    129,185.12x = 24,659,619,920.33
  5. Step 5: Solve for x
    x = 24,659,619,920.33/129,185.12
  6. Step 6: Final answer
    x = 190,885.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.