Home / 159,172.21-219,654.07-87,550.66

Finding the Fourth Proportional to 159,172.21, 219,654.07 and 87,550.66

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Solution

The fourth proportional to 159,172.21, 219,654.07 and 87,550.66 is: 120,817.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,172.21 : 219,654.07 = 87,550.66 : x
  2. Step 2: Convert to fraction form
    159,172.21/219,654.07 = 87,550.66/x
  3. Step 3: Cross multiply
    159,172.21x = 219,654.07 × 87,550.66
  4. Step 4: Simplify right side
    159,172.21x = 19,230,858,800.19
  5. Step 5: Solve for x
    x = 19,230,858,800.19/159,172.21
  6. Step 6: Final answer
    x = 120,817.94

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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.