Home / 141,433.78-195,178.61-77,771.58

Finding the Fourth Proportional to 141,433.78, 195,178.61 and 77,771.58

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Solution

The fourth proportional to 141,433.78, 195,178.61 and 77,771.58 is: 107,324.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,433.78 : 195,178.61 = 77,771.58 : x
  2. Step 2: Convert to fraction form
    141,433.78/195,178.61 = 77,771.58/x
  3. Step 3: Cross multiply
    141,433.78x = 195,178.61 × 77,771.58
  4. Step 4: Simplify right side
    141,433.78x = 15,179,347,906.01
  5. Step 5: Solve for x
    x = 15,179,347,906.01/141,433.78
  6. Step 6: Final answer
    x = 107,324.77

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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.