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Finding the Fourth Proportional to 118,645.70, 163,731.06 and 64,930.73

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Solution

The fourth proportional to 118,645.70, 163,731.06 and 64,930.73 is: 89,604.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,645.70 : 163,731.06 = 64,930.73 : x
  2. Step 2: Convert to fraction form
    118,645.70/163,731.06 = 64,930.73/x
  3. Step 3: Cross multiply
    118,645.70x = 163,731.06 × 64,930.73
  4. Step 4: Simplify right side
    118,645.70x = 10,631,177,249.47
  5. Step 5: Solve for x
    x = 10,631,177,249.47/118,645.70
  6. Step 6: Final answer
    x = 89,604.40

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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.