Home / 159,137.30-219,605.09-87,517.31

Finding the Fourth Proportional to 159,137.30, 219,605.09 and 87,517.31

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Solution

The fourth proportional to 159,137.30, 219,605.09 and 87,517.31 is: 120,771.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,137.30 : 219,605.09 = 87,517.31 : x
  2. Step 2: Convert to fraction form
    159,137.30/219,605.09 = 87,517.31/x
  3. Step 3: Cross multiply
    159,137.30x = 219,605.09 × 87,517.31
  4. Step 4: Simplify right side
    159,137.30x = 19,219,247,178.72
  5. Step 5: Solve for x
    x = 19,219,247,178.72/159,137.30
  6. Step 6: Final answer
    x = 120,771.48

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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.