Home / 143,681.14-198,279.90-83,286.79

Finding the Fourth Proportional to 143,681.14, 198,279.90 and 83,286.79

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Solution

The fourth proportional to 143,681.14, 198,279.90 and 83,286.79 is: 114,935.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,681.14 : 198,279.90 = 83,286.79 : x
  2. Step 2: Convert to fraction form
    143,681.14/198,279.90 = 83,286.79/x
  3. Step 3: Cross multiply
    143,681.14x = 198,279.90 × 83,286.79
  4. Step 4: Simplify right side
    143,681.14x = 16,514,096,392.52
  5. Step 5: Solve for x
    x = 16,514,096,392.52/143,681.14
  6. Step 6: Final answer
    x = 114,935.73

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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.