Home / 206,008.10-308,891.85-87,618.50

Finding the Fourth Proportional to 206,008.10, 308,891.85 and 87,618.50

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Solution

The fourth proportional to 206,008.10, 308,891.85 and 87,618.50 is: 131,376.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,008.10 : 308,891.85 = 87,618.50 : x
  2. Step 2: Convert to fraction form
    206,008.10/308,891.85 = 87,618.50/x
  3. Step 3: Cross multiply
    206,008.10x = 308,891.85 × 87,618.50
  4. Step 4: Simplify right side
    206,008.10x = 27,064,640,559.23
  5. Step 5: Solve for x
    x = 27,064,640,559.23/206,008.10
  6. Step 6: Final answer
    x = 131,376.58

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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.