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Finding the Fourth Proportional to 118,571.39, 163,629.81 and 64,855.23

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Solution

The fourth proportional to 118,571.39, 163,629.81 and 64,855.23 is: 89,500.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,571.39 : 163,629.81 = 64,855.23 : x
  2. Step 2: Convert to fraction form
    118,571.39/163,629.81 = 64,855.23/x
  3. Step 3: Cross multiply
    118,571.39x = 163,629.81 × 64,855.23
  4. Step 4: Simplify right side
    118,571.39x = 10,612,247,819.98
  5. Step 5: Solve for x
    x = 10,612,247,819.98/118,571.39
  6. Step 6: Final answer
    x = 89,500.91

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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.