Home / 213,543.25-320,508.06-113,787.70

Finding the Fourth Proportional to 213,543.25, 320,508.06 and 113,787.70

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Solution

The fourth proportional to 213,543.25, 320,508.06 and 113,787.70 is: 170,784.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,543.25 : 320,508.06 = 113,787.70 : x
  2. Step 2: Convert to fraction form
    213,543.25/320,508.06 = 113,787.70/x
  3. Step 3: Cross multiply
    213,543.25x = 320,508.06 × 113,787.70
  4. Step 4: Simplify right side
    213,543.25x = 36,469,874,978.86
  5. Step 5: Solve for x
    x = 36,469,874,978.86/213,543.25
  6. Step 6: Final answer
    x = 170,784.49

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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.