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Finding the Fourth Proportional to 172,940, 238,657.20 and 93,452

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Solution

The fourth proportional to 172,940, 238,657.20 and 93,452 is: 128,963.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,940 : 238,657.20 = 93,452 : x
  2. Step 2: Convert to fraction form
    172,940/238,657.20 = 93,452/x
  3. Step 3: Cross multiply
    172,940x = 238,657.20 × 93,452
  4. Step 4: Simplify right side
    172,940x = 22,302,992,654.40
  5. Step 5: Solve for x
    x = 22,302,992,654.40/172,940
  6. Step 6: Final answer
    x = 128,963.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.