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Finding the Fourth Proportional to 118,691.54, 178,037.31 and 39,805.54

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Solution

The fourth proportional to 118,691.54, 178,037.31 and 39,805.54 is: 59,708.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,691.54 : 178,037.31 = 39,805.54 : x
  2. Step 2: Convert to fraction form
    118,691.54/178,037.31 = 39,805.54/x
  3. Step 3: Cross multiply
    118,691.54x = 178,037.31 × 39,805.54
  4. Step 4: Simplify right side
    118,691.54x = 7,086,870,299.20
  5. Step 5: Solve for x
    x = 7,086,870,299.20/118,691.54
  6. Step 6: Final answer
    x = 59,708.30

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1.5x scale

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.