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Finding the Fourth Proportional to 123,639.80, 185,474.22 and 39,370.46

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Solution

The fourth proportional to 123,639.80, 185,474.22 and 39,370.46 is: 59,060.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,639.80 : 185,474.22 = 39,370.46 : x
  2. Step 2: Convert to fraction form
    123,639.80/185,474.22 = 39,370.46/x
  3. Step 3: Cross multiply
    123,639.80x = 185,474.22 × 39,370.46
  4. Step 4: Simplify right side
    123,639.80x = 7,302,205,359.54
  5. Step 5: Solve for x
    x = 7,302,205,359.54/123,639.80
  6. Step 6: Final answer
    x = 59,060.31

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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.