Home / 105,743.16-158,634.18-86,195.16

Finding the Fourth Proportional to 105,743.16, 158,634.18 and 86,195.16

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Solution

The fourth proportional to 105,743.16, 158,634.18 and 86,195.16 is: 129,308.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,743.16 : 158,634.18 = 86,195.16 : x
  2. Step 2: Convert to fraction form
    105,743.16/158,634.18 = 86,195.16/x
  3. Step 3: Cross multiply
    105,743.16x = 158,634.18 × 86,195.16
  4. Step 4: Simplify right side
    105,743.16x = 13,673,498,526.57
  5. Step 5: Solve for x
    x = 13,673,498,526.57/105,743.16
  6. Step 6: Final answer
    x = 129,308.59

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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.