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Finding the Fourth Proportional to 146,939.74, 202,776.78 and 79,871.74

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Solution

The fourth proportional to 146,939.74, 202,776.78 and 79,871.74 is: 110,222.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,939.74 : 202,776.78 = 79,871.74 : x
  2. Step 2: Convert to fraction form
    146,939.74/202,776.78 = 79,871.74/x
  3. Step 3: Cross multiply
    146,939.74x = 202,776.78 × 79,871.74
  4. Step 4: Simplify right side
    146,939.74x = 16,196,134,250.20
  5. Step 5: Solve for x
    x = 16,196,134,250.20/146,939.74
  6. Step 6: Final answer
    x = 110,222.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.