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Finding the Fourth Proportional to 252,134.72, 347,953.44 and 138,964.80

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Solution

The fourth proportional to 252,134.72, 347,953.44 and 138,964.80 is: 191,775.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,134.72 : 347,953.44 = 138,964.80 : x
  2. Step 2: Convert to fraction form
    252,134.72/347,953.44 = 138,964.80/x
  3. Step 3: Cross multiply
    252,134.72x = 347,953.44 × 138,964.80
  4. Step 4: Simplify right side
    252,134.72x = 48,353,280,198.91
  5. Step 5: Solve for x
    x = 48,353,280,198.91/252,134.72
  6. Step 6: Final answer
    x = 191,775.57

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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.