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Finding the Fourth Proportional to 139,008.92, 206,725.10 and 134,580.24

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Solution

The fourth proportional to 139,008.92, 206,725.10 and 134,580.24 is: 200,139.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,008.92 : 206,725.10 = 134,580.24 : x
  2. Step 2: Convert to fraction form
    139,008.92/206,725.10 = 134,580.24/x
  3. Step 3: Cross multiply
    139,008.92x = 206,725.10 × 134,580.24
  4. Step 4: Simplify right side
    139,008.92x = 27,821,112,899.12
  5. Step 5: Solve for x
    x = 27,821,112,899.12/139,008.92
  6. Step 6: Final answer
    x = 200,139.06

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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.