Home / 154,971.26-213,863.49-86,993.13

Finding the Fourth Proportional to 154,971.26, 213,863.49 and 86,993.13

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Solution

The fourth proportional to 154,971.26, 213,863.49 and 86,993.13 is: 120,052.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,971.26 : 213,863.49 = 86,993.13 : x
  2. Step 2: Convert to fraction form
    154,971.26/213,863.49 = 86,993.13/x
  3. Step 3: Cross multiply
    154,971.26x = 213,863.49 × 86,993.13
  4. Step 4: Simplify right side
    154,971.26x = 18,604,654,387.82
  5. Step 5: Solve for x
    x = 18,604,654,387.82/154,971.26
  6. Step 6: Final answer
    x = 120,052.29

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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.