Home / 115,310.91-159,133.01-66,909.19

Finding the Fourth Proportional to 115,310.91, 159,133.01 and 66,909.19

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Solution

The fourth proportional to 115,310.91, 159,133.01 and 66,909.19 is: 92,336.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,310.91 : 159,133.01 = 66,909.19 : x
  2. Step 2: Convert to fraction form
    115,310.91/159,133.01 = 66,909.19/x
  3. Step 3: Cross multiply
    115,310.91x = 159,133.01 × 66,909.19
  4. Step 4: Simplify right side
    115,310.91x = 10,647,460,367.36
  5. Step 5: Solve for x
    x = 10,647,460,367.36/115,310.91
  6. Step 6: Final answer
    x = 92,336.97

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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.