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Finding the Fourth Proportional to 141,755, 195,621.90 and 78,092.78

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Solution

The fourth proportional to 141,755, 195,621.90 and 78,092.78 is: 107,768.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,755 : 195,621.90 = 78,092.78 : x
  2. Step 2: Convert to fraction form
    141,755/195,621.90 = 78,092.78/x
  3. Step 3: Cross multiply
    141,755x = 195,621.90 × 78,092.78
  4. Step 4: Simplify right side
    141,755x = 15,276,657,999.88
  5. Step 5: Solve for x
    x = 15,276,657,999.88/141,755
  6. Step 6: Final answer
    x = 107,768.04

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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.