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Finding the Fourth Proportional to 118,759.84, 178,149.12 and 39,873.76

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Solution

The fourth proportional to 118,759.84, 178,149.12 and 39,873.76 is: 59,813.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,759.84 : 178,149.12 = 39,873.76 : x
  2. Step 2: Convert to fraction form
    118,759.84/178,149.12 = 39,873.76/x
  3. Step 3: Cross multiply
    118,759.84x = 178,149.12 × 39,873.76
  4. Step 4: Simplify right side
    118,759.84x = 7,103,475,255.09
  5. Step 5: Solve for x
    x = 7,103,475,255.09/118,759.84
  6. Step 6: Final answer
    x = 59,813.78

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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.