Home / 139,740.39-192,836.57-76,076.91

Finding the Fourth Proportional to 139,740.39, 192,836.57 and 76,076.91

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Solution

The fourth proportional to 139,740.39, 192,836.57 and 76,076.91 is: 104,983.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,740.39 : 192,836.57 = 76,076.91 : x
  2. Step 2: Convert to fraction form
    139,740.39/192,836.57 = 76,076.91/x
  3. Step 3: Cross multiply
    139,740.39x = 192,836.57 × 76,076.91
  4. Step 4: Simplify right side
    139,740.39x = 14,670,410,000.21
  5. Step 5: Solve for x
    x = 14,670,410,000.21/139,740.39
  6. Step 6: Final answer
    x = 104,983.32

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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.