Home / 149,815.26-206,828.10-102,138.66

Finding the Fourth Proportional to 149,815.26, 206,828.10 and 102,138.66

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Solution

The fourth proportional to 149,815.26, 206,828.10 and 102,138.66 is: 141,007.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,815.26 : 206,828.10 = 102,138.66 : x
  2. Step 2: Convert to fraction form
    149,815.26/206,828.10 = 102,138.66/x
  3. Step 3: Cross multiply
    149,815.26x = 206,828.10 × 102,138.66
  4. Step 4: Simplify right side
    149,815.26x = 21,125,144,984.35
  5. Step 5: Solve for x
    x = 21,125,144,984.35/149,815.26
  6. Step 6: Final answer
    x = 141,007.97

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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.