Home / 157,982.90-218,016.54-86,362.97

Finding the Fourth Proportional to 157,982.90, 218,016.54 and 86,362.97

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Solution

The fourth proportional to 157,982.90, 218,016.54 and 86,362.97 is: 119,180.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,982.90 : 218,016.54 = 86,362.97 : x
  2. Step 2: Convert to fraction form
    157,982.90/218,016.54 = 86,362.97/x
  3. Step 3: Cross multiply
    157,982.90x = 218,016.54 × 86,362.97
  4. Step 4: Simplify right side
    157,982.90x = 18,828,554,813.44
  5. Step 5: Solve for x
    x = 18,828,554,813.44/157,982.90
  6. Step 6: Final answer
    x = 119,180.97

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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.