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Finding the Fourth Proportional to 118,768.72, 178,125 and 34,506.40

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Solution

The fourth proportional to 118,768.72, 178,125 and 34,506.40 is: 51,751.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,768.72 : 178,125 = 34,506.40 : x
  2. Step 2: Convert to fraction form
    118,768.72/178,125 = 34,506.40/x
  3. Step 3: Cross multiply
    118,768.72x = 178,125 × 34,506.40
  4. Step 4: Simplify right side
    118,768.72x = 6,146,452,500
  5. Step 5: Solve for x
    x = 6,146,452,500/118,768.72
  6. Step 6: Final answer
    x = 51,751.44

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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.