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Finding the Fourth Proportional to 131,229, 196,878.78 and 52,398.63

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Solution

The fourth proportional to 131,229, 196,878.78 and 52,398.63 is: 78,612.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,229 : 196,878.78 = 52,398.63 : x
  2. Step 2: Convert to fraction form
    131,229/196,878.78 = 52,398.63/x
  3. Step 3: Cross multiply
    131,229x = 196,878.78 × 52,398.63
  4. Step 4: Simplify right side
    131,229x = 10,316,178,348.07
  5. Step 5: Solve for x
    x = 10,316,178,348.07/131,229
  6. Step 6: Final answer
    x = 78,612.03

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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.