Home / 138,918.33-208,654.43-131,084.91

Finding the Fourth Proportional to 138,918.33, 208,654.43 and 131,084.91

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Solution

The fourth proportional to 138,918.33, 208,654.43 and 131,084.91 is: 196,888.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,918.33 : 208,654.43 = 131,084.91 : x
  2. Step 2: Convert to fraction form
    138,918.33/208,654.43 = 131,084.91/x
  3. Step 3: Cross multiply
    138,918.33x = 208,654.43 × 131,084.91
  4. Step 4: Simplify right side
    138,918.33x = 27,351,446,522.23
  5. Step 5: Solve for x
    x = 27,351,446,522.23/138,918.33
  6. Step 6: Final answer
    x = 196,888.68

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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.