Home / 139,631.49-209,183.04-82,534.59

Finding the Fourth Proportional to 139,631.49, 209,183.04 and 82,534.59

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Solution

The fourth proportional to 139,631.49, 209,183.04 and 82,534.59 is: 123,645.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,631.49 : 209,183.04 = 82,534.59 : x
  2. Step 2: Convert to fraction form
    139,631.49/209,183.04 = 82,534.59/x
  3. Step 3: Cross multiply
    139,631.49x = 209,183.04 × 82,534.59
  4. Step 4: Simplify right side
    139,631.49x = 17,264,836,441.35
  5. Step 5: Solve for x
    x = 17,264,836,441.35/139,631.49
  6. Step 6: Final answer
    x = 123,645.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.