Home / 140,721.55-194,195.41-77,058.79

Finding the Fourth Proportional to 140,721.55, 194,195.41 and 77,058.79

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Solution

The fourth proportional to 140,721.55, 194,195.41 and 77,058.79 is: 106,340.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,721.55 : 194,195.41 = 77,058.79 : x
  2. Step 2: Convert to fraction form
    140,721.55/194,195.41 = 77,058.79/x
  3. Step 3: Cross multiply
    140,721.55x = 194,195.41 × 77,058.79
  4. Step 4: Simplify right side
    140,721.55x = 14,964,463,318.15
  5. Step 5: Solve for x
    x = 14,964,463,318.15/140,721.55
  6. Step 6: Final answer
    x = 106,340.95

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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.