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Finding the Fourth Proportional to 118,915.92, 178,373.52 and 30,169.26

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Solution

The fourth proportional to 118,915.92, 178,373.52 and 30,169.26 is: 45,253.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,915.92 : 178,373.52 = 30,169.26 : x
  2. Step 2: Convert to fraction form
    118,915.92/178,373.52 = 30,169.26/x
  3. Step 3: Cross multiply
    118,915.92x = 178,373.52 × 30,169.26
  4. Step 4: Simplify right side
    118,915.92x = 5,381,397,102.00
  5. Step 5: Solve for x
    x = 5,381,397,102.00/118,915.92
  6. Step 6: Final answer
    x = 45,253.80

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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.