Home / 128,163.12-192,244.68-49,314.48

Finding the Fourth Proportional to 128,163.12, 192,244.68 and 49,314.48

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Solution

The fourth proportional to 128,163.12, 192,244.68 and 49,314.48 is: 73,971.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,163.12 : 192,244.68 = 49,314.48 : x
  2. Step 2: Convert to fraction form
    128,163.12/192,244.68 = 49,314.48/x
  3. Step 3: Cross multiply
    128,163.12x = 192,244.68 × 49,314.48
  4. Step 4: Simplify right side
    128,163.12x = 9,480,446,426.97
  5. Step 5: Solve for x
    x = 9,480,446,426.97/128,163.12
  6. Step 6: Final answer
    x = 73,971.72

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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.