Home / 150,675.64-207,961.05-99,689.38

Finding the Fourth Proportional to 150,675.64, 207,961.05 and 99,689.38

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Solution

The fourth proportional to 150,675.64, 207,961.05 and 99,689.38 is: 137,590.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,675.64 : 207,961.05 = 99,689.38 : x
  2. Step 2: Convert to fraction form
    150,675.64/207,961.05 = 99,689.38/x
  3. Step 3: Cross multiply
    150,675.64x = 207,961.05 × 99,689.38
  4. Step 4: Simplify right side
    150,675.64x = 20,731,508,138.65
  5. Step 5: Solve for x
    x = 20,731,508,138.65/150,675.64
  6. Step 6: Final answer
    x = 137,590.31

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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.