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Finding the Fourth Proportional to 118,635.92, 163,714.88 and 67,645.20

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Solution

The fourth proportional to 118,635.92, 163,714.88 and 67,645.20 is: 93,348.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,635.92 : 163,714.88 = 67,645.20 : x
  2. Step 2: Convert to fraction form
    118,635.92/163,714.88 = 67,645.20/x
  3. Step 3: Cross multiply
    118,635.92x = 163,714.88 × 67,645.20
  4. Step 4: Simplify right side
    118,635.92x = 11,074,525,800.58
  5. Step 5: Solve for x
    x = 11,074,525,800.58/118,635.92
  6. Step 6: Final answer
    x = 93,348.84

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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.