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Finding the Fourth Proportional to 252,103.72, 347,886.64 and 138,926.44

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Solution

The fourth proportional to 252,103.72, 347,886.64 and 138,926.44 is: 191,709.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,103.72 : 347,886.64 = 138,926.44 : x
  2. Step 2: Convert to fraction form
    252,103.72/347,886.64 = 138,926.44/x
  3. Step 3: Cross multiply
    252,103.72x = 347,886.64 × 138,926.44
  4. Step 4: Simplify right side
    252,103.72x = 48,330,652,418.76
  5. Step 5: Solve for x
    x = 48,330,652,418.76/252,103.72
  6. Step 6: Final answer
    x = 191,709.40

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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.