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Finding the Fourth Proportional to 138,803.92, 208,220.52 and 44,047.55

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Solution

The fourth proportional to 138,803.92, 208,220.52 and 44,047.55 is: 66,075.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,803.92 : 208,220.52 = 44,047.55 : x
  2. Step 2: Convert to fraction form
    138,803.92/208,220.52 = 44,047.55/x
  3. Step 3: Cross multiply
    138,803.92x = 208,220.52 × 44,047.55
  4. Step 4: Simplify right side
    138,803.92x = 9,171,603,765.73
  5. Step 5: Solve for x
    x = 9,171,603,765.73/138,803.92
  6. Step 6: Final answer
    x = 66,075.97

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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.