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Finding the Fourth Proportional to 207,900, 311,901.96 and 60,156

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Solution

The fourth proportional to 207,900, 311,901.96 and 60,156 is: 90,249.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,900 : 311,901.96 = 60,156 : x
  2. Step 2: Convert to fraction form
    207,900/311,901.96 = 60,156/x
  3. Step 3: Cross multiply
    207,900x = 311,901.96 × 60,156
  4. Step 4: Simplify right side
    207,900x = 18,762,774,305.76
  5. Step 5: Solve for x
    x = 18,762,774,305.76/207,900
  6. Step 6: Final answer
    x = 90,249.03

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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.