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Finding the Fourth Proportional to 113,531.20, 156,673.03 and 63,230.20

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Solution

The fourth proportional to 113,531.20, 156,673.03 and 63,230.20 is: 87,257.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,531.20 : 156,673.03 = 63,230.20 : x
  2. Step 2: Convert to fraction form
    113,531.20/156,673.03 = 63,230.20/x
  3. Step 3: Cross multiply
    113,531.20x = 156,673.03 × 63,230.20
  4. Step 4: Simplify right side
    113,531.20x = 9,906,467,021.51
  5. Step 5: Solve for x
    x = 9,906,467,021.51/113,531.20
  6. Step 6: Final answer
    x = 87,257.66

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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.