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Finding the Fourth Proportional to 139,759.69, 192,866.46 and 76,097.50

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Solution

The fourth proportional to 139,759.69, 192,866.46 and 76,097.50 is: 105,013.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,759.69 : 192,866.46 = 76,097.50 : x
  2. Step 2: Convert to fraction form
    139,759.69/192,866.46 = 76,097.50/x
  3. Step 3: Cross multiply
    139,759.69x = 192,866.46 × 76,097.50
  4. Step 4: Simplify right side
    139,759.69x = 14,676,655,439.85
  5. Step 5: Solve for x
    x = 14,676,655,439.85/139,759.69
  6. Step 6: Final answer
    x = 105,013.51

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