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Finding the Fourth Proportional to 118,229.76, 163,152 and 64,513.44

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Solution

The fourth proportional to 118,229.76, 163,152 and 64,513.44 is: 89,025.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,229.76 : 163,152 = 64,513.44 : x
  2. Step 2: Convert to fraction form
    118,229.76/163,152 = 64,513.44/x
  3. Step 3: Cross multiply
    118,229.76x = 163,152 × 64,513.44
  4. Step 4: Simplify right side
    118,229.76x = 10,525,496,762.88
  5. Step 5: Solve for x
    x = 10,525,496,762.88/118,229.76
  6. Step 6: Final answer
    x = 89,025.78

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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.