Home / 136,920.06-188,951.13-80,332.38

Finding the Fourth Proportional to 136,920.06, 188,951.13 and 80,332.38

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Solution

The fourth proportional to 136,920.06, 188,951.13 and 80,332.38 is: 110,859.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,920.06 : 188,951.13 = 80,332.38 : x
  2. Step 2: Convert to fraction form
    136,920.06/188,951.13 = 80,332.38/x
  3. Step 3: Cross multiply
    136,920.06x = 188,951.13 × 80,332.38
  4. Step 4: Simplify right side
    136,920.06x = 15,178,893,976.59
  5. Step 5: Solve for x
    x = 15,178,893,976.59/136,920.06
  6. Step 6: Final answer
    x = 110,859.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.