Home / 258,105.11-356,172.93-143,391.15

Finding the Fourth Proportional to 258,105.11, 356,172.93 and 143,391.15

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Solution

The fourth proportional to 258,105.11, 356,172.93 and 143,391.15 is: 197,873.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,105.11 : 356,172.93 = 143,391.15 : x
  2. Step 2: Convert to fraction form
    258,105.11/356,172.93 = 143,391.15/x
  3. Step 3: Cross multiply
    258,105.11x = 356,172.93 × 143,391.15
  4. Step 4: Simplify right side
    258,105.11x = 51,072,046,031.57
  5. Step 5: Solve for x
    x = 51,072,046,031.57/258,105.11
  6. Step 6: Final answer
    x = 197,873.06

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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.