Home / 128,077.27-192,125.13-49,191.50

Finding the Fourth Proportional to 128,077.27, 192,125.13 and 49,191.50

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Solution

The fourth proportional to 128,077.27, 192,125.13 and 49,191.50 is: 73,790.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,077.27 : 192,125.13 = 49,191.50 : x
  2. Step 2: Convert to fraction form
    128,077.27/192,125.13 = 49,191.50/x
  3. Step 3: Cross multiply
    128,077.27x = 192,125.13 × 49,191.50
  4. Step 4: Simplify right side
    128,077.27x = 9,450,923,332.40
  5. Step 5: Solve for x
    x = 9,450,923,332.40/128,077.27
  6. Step 6: Final answer
    x = 73,790.79

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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.