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Finding the Fourth Proportional to 149,900.32, 206,854.32 and 82,828

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Solution

The fourth proportional to 149,900.32, 206,854.32 and 82,828 is: 114,298.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,900.32 : 206,854.32 = 82,828 : x
  2. Step 2: Convert to fraction form
    149,900.32/206,854.32 = 82,828/x
  3. Step 3: Cross multiply
    149,900.32x = 206,854.32 × 82,828
  4. Step 4: Simplify right side
    149,900.32x = 17,133,329,616.96
  5. Step 5: Solve for x
    x = 17,133,329,616.96/149,900.32
  6. Step 6: Final answer
    x = 114,298.15

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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.