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Finding the Fourth Proportional to 139,065.56, 206,809.30 and 134,636.92

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Solution

The fourth proportional to 139,065.56, 206,809.30 and 134,636.92 is: 200,223.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,065.56 : 206,809.30 = 134,636.92 : x
  2. Step 2: Convert to fraction form
    139,065.56/206,809.30 = 134,636.92/x
  3. Step 3: Cross multiply
    139,065.56x = 206,809.30 × 134,636.92
  4. Step 4: Simplify right side
    139,065.56x = 27,844,167,179.36
  5. Step 5: Solve for x
    x = 27,844,167,179.36/139,065.56
  6. Step 6: Final answer
    x = 200,223.31

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1.5x scale

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.