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Finding the Fourth Proportional to 118,791.84, 178,150.50 and 38,811.57

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Solution

The fourth proportional to 118,791.84, 178,150.50 and 38,811.57 is: 58,205.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,791.84 : 178,150.50 = 38,811.57 : x
  2. Step 2: Convert to fraction form
    118,791.84/178,150.50 = 38,811.57/x
  3. Step 3: Cross multiply
    118,791.84x = 178,150.50 × 38,811.57
  4. Step 4: Simplify right side
    118,791.84x = 6,914,300,601.29
  5. Step 5: Solve for x
    x = 6,914,300,601.29/118,791.84
  6. Step 6: Final answer
    x = 58,205.18

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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.