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Finding the Fourth Proportional to 138,651.33, 207,888.83 and 58,647.46

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Solution

The fourth proportional to 138,651.33, 207,888.83 and 58,647.46 is: 87,933.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,651.33 : 207,888.83 = 58,647.46 : x
  2. Step 2: Convert to fraction form
    138,651.33/207,888.83 = 58,647.46/x
  3. Step 3: Cross multiply
    138,651.33x = 207,888.83 × 58,647.46
  4. Step 4: Simplify right side
    138,651.33x = 12,192,151,841.87
  5. Step 5: Solve for x
    x = 12,192,151,841.87/138,651.33
  6. Step 6: Final answer
    x = 87,933.90

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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.