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Finding the Fourth Proportional to 138,777.81, 208,174.14 and 44,015.18

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Solution

The fourth proportional to 138,777.81, 208,174.14 and 44,015.18 is: 66,025.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,777.81 : 208,174.14 = 44,015.18 : x
  2. Step 2: Convert to fraction form
    138,777.81/208,174.14 = 44,015.18/x
  3. Step 3: Cross multiply
    138,777.81x = 208,174.14 × 44,015.18
  4. Step 4: Simplify right side
    138,777.81x = 9,162,823,189.89
  5. Step 5: Solve for x
    x = 9,162,823,189.89/138,777.81
  6. Step 6: Final answer
    x = 66,025.13

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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.