Home / 206,971.65-285,617.48-115,087.28

Finding the Fourth Proportional to 206,971.65, 285,617.48 and 115,087.28

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Solution

The fourth proportional to 206,971.65, 285,617.48 and 115,087.28 is: 158,818.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,971.65 : 285,617.48 = 115,087.28 : x
  2. Step 2: Convert to fraction form
    206,971.65/285,617.48 = 115,087.28/x
  3. Step 3: Cross multiply
    206,971.65x = 285,617.48 × 115,087.28
  4. Step 4: Simplify right side
    206,971.65x = 32,870,936,890.13
  5. Step 5: Solve for x
    x = 32,870,936,890.13/206,971.65
  6. Step 6: Final answer
    x = 158,818.55

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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.