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Finding the Fourth Proportional to 131,975.20, 198,108.60 and 102,523.60

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Solution

The fourth proportional to 131,975.20, 198,108.60 and 102,523.60 is: 153,898.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,975.20 : 198,108.60 = 102,523.60 : x
  2. Step 2: Convert to fraction form
    131,975.20/198,108.60 = 102,523.60/x
  3. Step 3: Cross multiply
    131,975.20x = 198,108.60 × 102,523.60
  4. Step 4: Simplify right side
    131,975.20x = 20,310,806,862.96
  5. Step 5: Solve for x
    x = 20,310,806,862.96/131,975.20
  6. Step 6: Final answer
    x = 153,898.66

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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.