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Finding the Fourth Proportional to 113,529, 156,674.88 and 63,228

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Solution

The fourth proportional to 113,529, 156,674.88 and 63,228 is: 87,257.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,529 : 156,674.88 = 63,228 : x
  2. Step 2: Convert to fraction form
    113,529/156,674.88 = 63,228/x
  3. Step 3: Cross multiply
    113,529x = 156,674.88 × 63,228
  4. Step 4: Simplify right side
    113,529x = 9,906,239,312.64
  5. Step 5: Solve for x
    x = 9,906,239,312.64/113,529
  6. Step 6: Final answer
    x = 87,257.35

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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.