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Finding the Fourth Proportional to 118,505.72, 177,768.03 and 39,620.36

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Solution

The fourth proportional to 118,505.72, 177,768.03 and 39,620.36 is: 59,433.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,505.72 : 177,768.03 = 39,620.36 : x
  2. Step 2: Convert to fraction form
    118,505.72/177,768.03 = 39,620.36/x
  3. Step 3: Cross multiply
    118,505.72x = 177,768.03 × 39,620.36
  4. Step 4: Simplify right side
    118,505.72x = 7,043,233,345.09
  5. Step 5: Solve for x
    x = 7,043,233,345.09/118,505.72
  6. Step 6: Final answer
    x = 59,433.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.