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Finding the Fourth Proportional to 113,771.30, 156,936.74 and 73,508.80

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Solution

The fourth proportional to 113,771.30, 156,936.74 and 73,508.80 is: 101,398.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,771.30 : 156,936.74 = 73,508.80 : x
  2. Step 2: Convert to fraction form
    113,771.30/156,936.74 = 73,508.80/x
  3. Step 3: Cross multiply
    113,771.30x = 156,936.74 × 73,508.80
  4. Step 4: Simplify right side
    113,771.30x = 11,536,231,433.31
  5. Step 5: Solve for x
    x = 11,536,231,433.31/113,771.30
  6. Step 6: Final answer
    x = 101,398.43

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1.5x scale

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.