Home / 206,271.72-309,429.18-87,955.56

Finding the Fourth Proportional to 206,271.72, 309,429.18 and 87,955.56

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Solution

The fourth proportional to 206,271.72, 309,429.18 and 87,955.56 is: 131,942.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,271.72 : 309,429.18 = 87,955.56 : x
  2. Step 2: Convert to fraction form
    206,271.72/309,429.18 = 87,955.56/x
  3. Step 3: Cross multiply
    206,271.72x = 309,429.18 × 87,955.56
  4. Step 4: Simplify right side
    206,271.72x = 27,216,016,807.24
  5. Step 5: Solve for x
    x = 27,216,016,807.24/206,271.72
  6. Step 6: Final answer
    x = 131,942.55

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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.