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Finding the Fourth Proportional to 118,419.70, 177,629.55 and 99,757.30

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Solution

The fourth proportional to 118,419.70, 177,629.55 and 99,757.30 is: 149,635.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,419.70 : 177,629.55 = 99,757.30 : x
  2. Step 2: Convert to fraction form
    118,419.70/177,629.55 = 99,757.30/x
  3. Step 3: Cross multiply
    118,419.70x = 177,629.55 × 99,757.30
  4. Step 4: Simplify right side
    118,419.70x = 17,719,844,308.22
  5. Step 5: Solve for x
    x = 17,719,844,308.22/118,419.70
  6. Step 6: Final answer
    x = 149,635.95

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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.