Home / 139,228.13-192,184.70-82,639.50

Finding the Fourth Proportional to 139,228.13, 192,184.70 and 82,639.50

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Solution

The fourth proportional to 139,228.13, 192,184.70 and 82,639.50 is: 114,072.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,228.13 : 192,184.70 = 82,639.50 : x
  2. Step 2: Convert to fraction form
    139,228.13/192,184.70 = 82,639.50/x
  3. Step 3: Cross multiply
    139,228.13x = 192,184.70 × 82,639.50
  4. Step 4: Simplify right side
    139,228.13x = 15,882,047,102.45
  5. Step 5: Solve for x
    x = 15,882,047,102.45/139,228.13
  6. Step 6: Final answer
    x = 114,072.12

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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.