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Finding the Fourth Proportional to 118,889.25, 178,208.19 and 43,961.28

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Solution

The fourth proportional to 118,889.25, 178,208.19 and 43,961.28 is: 65,895.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,889.25 : 178,208.19 = 43,961.28 : x
  2. Step 2: Convert to fraction form
    118,889.25/178,208.19 = 43,961.28/x
  3. Step 3: Cross multiply
    118,889.25x = 178,208.19 × 43,961.28
  4. Step 4: Simplify right side
    118,889.25x = 7,834,260,138.88
  5. Step 5: Solve for x
    x = 7,834,260,138.88/118,889.25
  6. Step 6: Final answer
    x = 65,895.45

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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.