Home / 105,517.80-158,321.67-69,991.52

Finding the Fourth Proportional to 105,517.80, 158,321.67 and 69,991.52

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Solution

The fourth proportional to 105,517.80, 158,321.67 and 69,991.52 is: 105,017.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,517.80 : 158,321.67 = 69,991.52 : x
  2. Step 2: Convert to fraction form
    105,517.80/158,321.67 = 69,991.52/x
  3. Step 3: Cross multiply
    105,517.80x = 158,321.67 × 69,991.52
  4. Step 4: Simplify right side
    105,517.80x = 11,081,174,080.23
  5. Step 5: Solve for x
    x = 11,081,174,080.23/105,517.80
  6. Step 6: Final answer
    x = 105,017.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.