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Finding the Fourth Proportional to 139,727.54, 192,824.02 and 76,065.32

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Solution

The fourth proportional to 139,727.54, 192,824.02 and 76,065.32 is: 104,970.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,727.54 : 192,824.02 = 76,065.32 : x
  2. Step 2: Convert to fraction form
    139,727.54/192,824.02 = 76,065.32/x
  3. Step 3: Cross multiply
    139,727.54x = 192,824.02 × 76,065.32
  4. Step 4: Simplify right side
    139,727.54x = 14,667,220,784.99
  5. Step 5: Solve for x
    x = 14,667,220,784.99/139,727.54
  6. Step 6: Final answer
    x = 104,970.15

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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.