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Finding the Fourth Proportional to 113,571, 156,733.38 and 63,270

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Solution

The fourth proportional to 113,571, 156,733.38 and 63,270 is: 87,315.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,571 : 156,733.38 = 63,270 : x
  2. Step 2: Convert to fraction form
    113,571/156,733.38 = 63,270/x
  3. Step 3: Cross multiply
    113,571x = 156,733.38 × 63,270
  4. Step 4: Simplify right side
    113,571x = 9,916,520,952.60
  5. Step 5: Solve for x
    x = 9,916,520,952.60/113,571
  6. Step 6: Final answer
    x = 87,315.61

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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.