Home / 139,882.12-193,037.40-76,219.92

Finding the Fourth Proportional to 139,882.12, 193,037.40 and 76,219.92

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Solution

The fourth proportional to 139,882.12, 193,037.40 and 76,219.92 is: 105,183.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,882.12 : 193,037.40 = 76,219.92 : x
  2. Step 2: Convert to fraction form
    139,882.12/193,037.40 = 76,219.92/x
  3. Step 3: Cross multiply
    139,882.12x = 193,037.40 × 76,219.92
  4. Step 4: Simplify right side
    139,882.12x = 14,713,295,399.38
  5. Step 5: Solve for x
    x = 14,713,295,399.38/139,882.12
  6. Step 6: Final answer
    x = 105,183.53

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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.