Home / 138,798.70-191,865.00-123,839.62

Finding the Fourth Proportional to 138,798.70, 191,865.00 and 123,839.62

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Solution

The fourth proportional to 138,798.70, 191,865.00 and 123,839.62 is: 171,186.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,798.70 : 191,865.00 = 123,839.62 : x
  2. Step 2: Convert to fraction form
    138,798.70/191,865.00 = 123,839.62/x
  3. Step 3: Cross multiply
    138,798.70x = 191,865.00 × 123,839.62
  4. Step 4: Simplify right side
    138,798.70x = 23,760,488,676.04
  5. Step 5: Solve for x
    x = 23,760,488,676.04/138,798.70
  6. Step 6: Final answer
    x = 171,186.68

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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.