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Finding the Fourth Proportional to 139,102.28, 208,669.76 and 44,299.28

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Solution

The fourth proportional to 139,102.28, 208,669.76 and 44,299.28 is: 66,454.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,102.28 : 208,669.76 = 44,299.28 : x
  2. Step 2: Convert to fraction form
    139,102.28/208,669.76 = 44,299.28/x
  3. Step 3: Cross multiply
    139,102.28x = 208,669.76 × 44,299.28
  4. Step 4: Simplify right side
    139,102.28x = 9,243,918,860.93
  5. Step 5: Solve for x
    x = 9,243,918,860.93/139,102.28
  6. Step 6: Final answer
    x = 66,454.12

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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.