Home / 138,565.98-191,206.79-102,286.73

Finding the Fourth Proportional to 138,565.98, 191,206.79 and 102,286.73

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Solution

The fourth proportional to 138,565.98, 191,206.79 and 102,286.73 is: 141,145.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,565.98 : 191,206.79 = 102,286.73 : x
  2. Step 2: Convert to fraction form
    138,565.98/191,206.79 = 102,286.73/x
  3. Step 3: Cross multiply
    138,565.98x = 191,206.79 × 102,286.73
  4. Step 4: Simplify right side
    138,565.98x = 19,557,915,835.43
  5. Step 5: Solve for x
    x = 19,557,915,835.43/138,565.98
  6. Step 6: Final answer
    x = 141,145.15

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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.