Home / 206,041.24-309,087.78-72,890.20

Finding the Fourth Proportional to 206,041.24, 309,087.78 and 72,890.20

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Solution

The fourth proportional to 206,041.24, 309,087.78 and 72,890.20 is: 109,344.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,041.24 : 309,087.78 = 72,890.20 : x
  2. Step 2: Convert to fraction form
    206,041.24/309,087.78 = 72,890.20/x
  3. Step 3: Cross multiply
    206,041.24x = 309,087.78 × 72,890.20
  4. Step 4: Simplify right side
    206,041.24x = 22,529,470,101.76
  5. Step 5: Solve for x
    x = 22,529,470,101.76/206,041.24
  6. Step 6: Final answer
    x = 109,344.47

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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.