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Finding the Fourth Proportional to 118,709.49, 163,819.26 and 64,994.88

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Solution

The fourth proportional to 118,709.49, 163,819.26 and 64,994.88 is: 89,693.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,709.49 : 163,819.26 = 64,994.88 : x
  2. Step 2: Convert to fraction form
    118,709.49/163,819.26 = 64,994.88/x
  3. Step 3: Cross multiply
    118,709.49x = 163,819.26 × 64,994.88
  4. Step 4: Simplify right side
    118,709.49x = 10,647,413,145.39
  5. Step 5: Solve for x
    x = 10,647,413,145.39/118,709.49
  6. Step 6: Final answer
    x = 89,693.02

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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.