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Finding the Fourth Proportional to 139,810.80, 192,959.03 and 101,174.07

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Solution

The fourth proportional to 139,810.80, 192,959.03 and 101,174.07 is: 139,634.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,810.80 : 192,959.03 = 101,174.07 : x
  2. Step 2: Convert to fraction form
    139,810.80/192,959.03 = 101,174.07/x
  3. Step 3: Cross multiply
    139,810.80x = 192,959.03 × 101,174.07
  4. Step 4: Simplify right side
    139,810.80x = 19,522,450,408.35
  5. Step 5: Solve for x
    x = 19,522,450,408.35/139,810.80
  6. Step 6: Final answer
    x = 139,634.78

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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.