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Finding the Fourth Proportional to 198,056, 297,122.88 and 87,248

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Solution

The fourth proportional to 198,056, 297,122.88 and 87,248 is: 130,889.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,056 : 297,122.88 = 87,248 : x
  2. Step 2: Convert to fraction form
    198,056/297,122.88 = 87,248/x
  3. Step 3: Cross multiply
    198,056x = 297,122.88 × 87,248
  4. Step 4: Simplify right side
    198,056x = 25,923,377,034.24
  5. Step 5: Solve for x
    x = 25,923,377,034.24/198,056
  6. Step 6: Final answer
    x = 130,889.13

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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.