Home / 208,787.06-313,176.76-66,631.21

Finding the Fourth Proportional to 208,787.06, 313,176.76 and 66,631.21

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Solution

The fourth proportional to 208,787.06, 313,176.76 and 66,631.21 is: 99,945.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,787.06 : 313,176.76 = 66,631.21 : x
  2. Step 2: Convert to fraction form
    208,787.06/313,176.76 = 66,631.21/x
  3. Step 3: Cross multiply
    208,787.06x = 313,176.76 × 66,631.21
  4. Step 4: Simplify right side
    208,787.06x = 20,867,345,513.16
  5. Step 5: Solve for x
    x = 20,867,345,513.16/208,787.06
  6. Step 6: Final answer
    x = 99,945.59

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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.