Home / 159,351.14-219,900.32-87,731.70

Finding the Fourth Proportional to 159,351.14, 219,900.32 and 87,731.70

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Solution

The fourth proportional to 159,351.14, 219,900.32 and 87,731.70 is: 121,067.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,351.14 : 219,900.32 = 87,731.70 : x
  2. Step 2: Convert to fraction form
    159,351.14/219,900.32 = 87,731.70/x
  3. Step 3: Cross multiply
    159,351.14x = 219,900.32 × 87,731.70
  4. Step 4: Simplify right side
    159,351.14x = 19,292,228,904.14
  5. Step 5: Solve for x
    x = 19,292,228,904.14/159,351.14
  6. Step 6: Final answer
    x = 121,067.40

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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.