Home / 102,791.13-141,890.40-77,371.03

Finding the Fourth Proportional to 102,791.13, 141,890.40 and 77,371.03

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Solution

The fourth proportional to 102,791.13, 141,890.40 and 77,371.03 is: 106,801.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,791.13 : 141,890.40 = 77,371.03 : x
  2. Step 2: Convert to fraction form
    102,791.13/141,890.40 = 77,371.03/x
  3. Step 3: Cross multiply
    102,791.13x = 141,890.40 × 77,371.03
  4. Step 4: Simplify right side
    102,791.13x = 10,978,206,572.48
  5. Step 5: Solve for x
    x = 10,978,206,572.48/102,791.13
  6. Step 6: Final answer
    x = 106,801.11

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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.