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Finding the Fourth Proportional to 172,951.34, 238,662.56 and 100,348.61

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Solution

The fourth proportional to 172,951.34, 238,662.56 and 100,348.61 is: 138,475.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,951.34 : 238,662.56 = 100,348.61 : x
  2. Step 2: Convert to fraction form
    172,951.34/238,662.56 = 100,348.61/x
  3. Step 3: Cross multiply
    172,951.34x = 238,662.56 × 100,348.61
  4. Step 4: Simplify right side
    172,951.34x = 23,949,454,459.99
  5. Step 5: Solve for x
    x = 23,949,454,459.99/172,951.34
  6. Step 6: Final answer
    x = 138,475.11

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1.5x scale

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.