Home / 204,889.20-307,158.51-78,620.06

Finding the Fourth Proportional to 204,889.20, 307,158.51 and 78,620.06

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Solution

The fourth proportional to 204,889.20, 307,158.51 and 78,620.06 is: 117,862.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,889.20 : 307,158.51 = 78,620.06 : x
  2. Step 2: Convert to fraction form
    204,889.20/307,158.51 = 78,620.06/x
  3. Step 3: Cross multiply
    204,889.20x = 307,158.51 × 78,620.06
  4. Step 4: Simplify right side
    204,889.20x = 24,148,820,021.19
  5. Step 5: Solve for x
    x = 24,148,820,021.19/204,889.20
  6. Step 6: Final answer
    x = 117,862.82

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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.