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Finding the Fourth Proportional to 139,154.48, 208,748.28 and 44,351.78

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Solution

The fourth proportional to 139,154.48, 208,748.28 and 44,351.78 is: 66,532.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,154.48 : 208,748.28 = 44,351.78 : x
  2. Step 2: Convert to fraction form
    139,154.48/208,748.28 = 44,351.78/x
  3. Step 3: Cross multiply
    139,154.48x = 208,748.28 × 44,351.78
  4. Step 4: Simplify right side
    139,154.48x = 9,258,357,789.94
  5. Step 5: Solve for x
    x = 9,258,357,789.94/139,154.48
  6. Step 6: Final answer
    x = 66,532.95

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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.