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Finding the Fourth Proportional to 118,481.60, 163,499.84 and 64,768.48

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Solution

The fourth proportional to 118,481.60, 163,499.84 and 64,768.48 is: 89,377.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,481.60 : 163,499.84 = 64,768.48 : x
  2. Step 2: Convert to fraction form
    118,481.60/163,499.84 = 64,768.48/x
  3. Step 3: Cross multiply
    118,481.60x = 163,499.84 × 64,768.48
  4. Step 4: Simplify right side
    118,481.60x = 10,589,636,117.04
  5. Step 5: Solve for x
    x = 10,589,636,117.04/118,481.60
  6. Step 6: Final answer
    x = 89,377.90

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1.5x scale

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.