Home / 136,902.51-188,921.09-79,546.61

Finding the Fourth Proportional to 136,902.51, 188,921.09 and 79,546.61

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Solution

The fourth proportional to 136,902.51, 188,921.09 and 79,546.61 is: 109,771.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,902.51 : 188,921.09 = 79,546.61 : x
  2. Step 2: Convert to fraction form
    136,902.51/188,921.09 = 79,546.61/x
  3. Step 3: Cross multiply
    136,902.51x = 188,921.09 × 79,546.61
  4. Step 4: Simplify right side
    136,902.51x = 15,028,032,938.17
  5. Step 5: Solve for x
    x = 15,028,032,938.17/136,902.51
  6. Step 6: Final answer
    x = 109,771.79

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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.