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Finding the Fourth Proportional to 139,371.84, 192,334.48 and 75,710.88

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Solution

The fourth proportional to 139,371.84, 192,334.48 and 75,710.88 is: 104,481.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,371.84 : 192,334.48 = 75,710.88 : x
  2. Step 2: Convert to fraction form
    139,371.84/192,334.48 = 75,710.88/x
  3. Step 3: Cross multiply
    139,371.84x = 192,334.48 × 75,710.88
  4. Step 4: Simplify right side
    139,371.84x = 14,561,812,735.14
  5. Step 5: Solve for x
    x = 14,561,812,735.14/139,371.84
  6. Step 6: Final answer
    x = 104,481.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.