Home / 213,157.32-319,736-108,006.36

Finding the Fourth Proportional to 213,157.32, 319,736 and 108,006.36

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Solution

The fourth proportional to 213,157.32, 319,736 and 108,006.36 is: 162,009.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,157.32 : 319,736 = 108,006.36 : x
  2. Step 2: Convert to fraction form
    213,157.32/319,736 = 108,006.36/x
  3. Step 3: Cross multiply
    213,157.32x = 319,736 × 108,006.36
  4. Step 4: Simplify right side
    213,157.32x = 34,533,521,520.96
  5. Step 5: Solve for x
    x = 34,533,521,520.96/213,157.32
  6. Step 6: Final answer
    x = 162,009.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.