Home / 206,299.10-309,465.06-87,971.47

Finding the Fourth Proportional to 206,299.10, 309,465.06 and 87,971.47

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Solution

The fourth proportional to 206,299.10, 309,465.06 and 87,971.47 is: 131,964.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,299.10 : 309,465.06 = 87,971.47 : x
  2. Step 2: Convert to fraction form
    206,299.10/309,465.06 = 87,971.47/x
  3. Step 3: Cross multiply
    206,299.10x = 309,465.06 × 87,971.47
  4. Step 4: Simplify right side
    206,299.10x = 27,224,095,138.28
  5. Step 5: Solve for x
    x = 27,224,095,138.28/206,299.10
  6. Step 6: Final answer
    x = 131,964.20

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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.