Home / 140,678.72-194,137.20-77,022.48

Finding the Fourth Proportional to 140,678.72, 194,137.20 and 77,022.48

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Solution

The fourth proportional to 140,678.72, 194,137.20 and 77,022.48 is: 106,291.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,678.72 : 194,137.20 = 77,022.48 : x
  2. Step 2: Convert to fraction form
    140,678.72/194,137.20 = 77,022.48/x
  3. Step 3: Cross multiply
    140,678.72x = 194,137.20 × 77,022.48
  4. Step 4: Simplify right side
    140,678.72x = 14,952,928,604.26
  5. Step 5: Solve for x
    x = 14,952,928,604.26/140,678.72
  6. Step 6: Final answer
    x = 106,291.33

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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.