Home / 136,222.33-187,983.86-78,864.07

Finding the Fourth Proportional to 136,222.33, 187,983.86 and 78,864.07

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Solution

The fourth proportional to 136,222.33, 187,983.86 and 78,864.07 is: 108,830.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,222.33 : 187,983.86 = 78,864.07 : x
  2. Step 2: Convert to fraction form
    136,222.33/187,983.86 = 78,864.07/x
  3. Step 3: Cross multiply
    136,222.33x = 187,983.86 × 78,864.07
  4. Step 4: Simplify right side
    136,222.33x = 14,825,172,293.91
  5. Step 5: Solve for x
    x = 14,825,172,293.91/136,222.33
  6. Step 6: Final answer
    x = 108,830.71

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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.