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Finding the Fourth Proportional to 138,063.98, 207,071.67 and 36,863.29

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Solution

The fourth proportional to 138,063.98, 207,071.67 and 36,863.29 is: 55,288.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,063.98 : 207,071.67 = 36,863.29 : x
  2. Step 2: Convert to fraction form
    138,063.98/207,071.67 = 36,863.29/x
  3. Step 3: Cross multiply
    138,063.98x = 207,071.67 × 36,863.29
  4. Step 4: Simplify right side
    138,063.98x = 7,633,343,021.99
  5. Step 5: Solve for x
    x = 7,633,343,021.99/138,063.98
  6. Step 6: Final answer
    x = 55,288.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.