Home / 139,945.62-193,126.97-76,283.42

Finding the Fourth Proportional to 139,945.62, 193,126.97 and 76,283.42

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Solution

The fourth proportional to 139,945.62, 193,126.97 and 76,283.42 is: 105,272.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,945.62 : 193,126.97 = 76,283.42 : x
  2. Step 2: Convert to fraction form
    139,945.62/193,126.97 = 76,283.42/x
  3. Step 3: Cross multiply
    139,945.62x = 193,126.97 × 76,283.42
  4. Step 4: Simplify right side
    139,945.62x = 14,732,384,418.79
  5. Step 5: Solve for x
    x = 14,732,384,418.79/139,945.62
  6. Step 6: Final answer
    x = 105,272.21

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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.