Home / 187,581.82-258,863.70-102,706.78

Finding the Fourth Proportional to 187,581.82, 258,863.70 and 102,706.78

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Solution

The fourth proportional to 187,581.82, 258,863.70 and 102,706.78 is: 141,735.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,581.82 : 258,863.70 = 102,706.78 : x
  2. Step 2: Convert to fraction form
    187,581.82/258,863.70 = 102,706.78/x
  3. Step 3: Cross multiply
    187,581.82x = 258,863.70 × 102,706.78
  4. Step 4: Simplify right side
    187,581.82x = 26,587,057,085.89
  5. Step 5: Solve for x
    x = 26,587,057,085.89/187,581.82
  6. Step 6: Final answer
    x = 141,735.79

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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.