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Finding the Fourth Proportional to 118,768.87, 163,899.01 and 64,320.60

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Solution

The fourth proportional to 118,768.87, 163,899.01 and 64,320.60 is: 88,761.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,768.87 : 163,899.01 = 64,320.60 : x
  2. Step 2: Convert to fraction form
    118,768.87/163,899.01 = 64,320.60/x
  3. Step 3: Cross multiply
    118,768.87x = 163,899.01 × 64,320.60
  4. Step 4: Simplify right side
    118,768.87x = 10,542,082,128.39
  5. Step 5: Solve for x
    x = 10,542,082,128.39/118,768.87
  6. Step 6: Final answer
    x = 88,761.33

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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.