Home / 139,931.38-209,896.08-40,091.95

Finding the Fourth Proportional to 139,931.38, 209,896.08 and 40,091.95

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Solution

The fourth proportional to 139,931.38, 209,896.08 and 40,091.95 is: 60,137.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,931.38 : 209,896.08 = 40,091.95 : x
  2. Step 2: Convert to fraction form
    139,931.38/209,896.08 = 40,091.95/x
  3. Step 3: Cross multiply
    139,931.38x = 209,896.08 × 40,091.95
  4. Step 4: Simplify right side
    139,931.38x = 8,415,143,144.56
  5. Step 5: Solve for x
    x = 8,415,143,144.56/139,931.38
  6. Step 6: Final answer
    x = 60,137.64

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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.