Home / 206,288.51-309,330.70-73,148.81

Finding the Fourth Proportional to 206,288.51, 309,330.70 and 73,148.81

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Solution

The fourth proportional to 206,288.51, 309,330.70 and 73,148.81 is: 109,687.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,288.51 : 309,330.70 = 73,148.81 : x
  2. Step 2: Convert to fraction form
    206,288.51/309,330.70 = 73,148.81/x
  3. Step 3: Cross multiply
    206,288.51x = 309,330.70 × 73,148.81
  4. Step 4: Simplify right side
    206,288.51x = 22,627,170,871.94
  5. Step 5: Solve for x
    x = 22,627,170,871.94/206,288.51
  6. Step 6: Final answer
    x = 109,687.02

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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.