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Finding the Fourth Proportional to 139,048.04, 206,783.22 and 134,619.38

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Solution

The fourth proportional to 139,048.04, 206,783.22 and 134,619.38 is: 200,197.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,048.04 : 206,783.22 = 134,619.38 : x
  2. Step 2: Convert to fraction form
    139,048.04/206,783.22 = 134,619.38/x
  3. Step 3: Cross multiply
    139,048.04x = 206,783.22 × 134,619.38
  4. Step 4: Simplify right side
    139,048.04x = 27,837,028,870.80
  5. Step 5: Solve for x
    x = 27,837,028,870.80/139,048.04
  6. Step 6: Final answer
    x = 200,197.20

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.