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Finding the Fourth Proportional to 113,197.44, 156,231.81 and 65,479.80

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Solution

The fourth proportional to 113,197.44, 156,231.81 and 65,479.80 is: 90,373.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,197.44 : 156,231.81 = 65,479.80 : x
  2. Step 2: Convert to fraction form
    113,197.44/156,231.81 = 65,479.80/x
  3. Step 3: Cross multiply
    113,197.44x = 156,231.81 × 65,479.80
  4. Step 4: Simplify right side
    113,197.44x = 10,230,027,672.44
  5. Step 5: Solve for x
    x = 10,230,027,672.44/113,197.44
  6. Step 6: Final answer
    x = 90,373.31

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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.