Home / 115,319.80-159,142.54-66,932.43

Finding the Fourth Proportional to 115,319.80, 159,142.54 and 66,932.43

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Solution

The fourth proportional to 115,319.80, 159,142.54 and 66,932.43 is: 92,367.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,319.80 : 159,142.54 = 66,932.43 : x
  2. Step 2: Convert to fraction form
    115,319.80/159,142.54 = 66,932.43/x
  3. Step 3: Cross multiply
    115,319.80x = 159,142.54 × 66,932.43
  4. Step 4: Simplify right side
    115,319.80x = 10,651,796,918.57
  5. Step 5: Solve for x
    x = 10,651,796,918.57/115,319.80
  6. Step 6: Final answer
    x = 92,367.46

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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.