Home / 204,816.30-307,224.45-86,621.10

Finding the Fourth Proportional to 204,816.30, 307,224.45 and 86,621.10

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Solution

The fourth proportional to 204,816.30, 307,224.45 and 86,621.10 is: 129,931.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,816.30 : 307,224.45 = 86,621.10 : x
  2. Step 2: Convert to fraction form
    204,816.30/307,224.45 = 86,621.10/x
  3. Step 3: Cross multiply
    204,816.30x = 307,224.45 × 86,621.10
  4. Step 4: Simplify right side
    204,816.30x = 26,612,119,805.90
  5. Step 5: Solve for x
    x = 26,612,119,805.90/204,816.30
  6. Step 6: Final answer
    x = 129,931.65

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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.