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Finding the Fourth Proportional to 156,375.99, 215,798.76 and 84,755.97

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Solution

The fourth proportional to 156,375.99, 215,798.76 and 84,755.97 is: 116,963.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,375.99 : 215,798.76 = 84,755.97 : x
  2. Step 2: Convert to fraction form
    156,375.99/215,798.76 = 84,755.97/x
  3. Step 3: Cross multiply
    156,375.99x = 215,798.76 × 84,755.97
  4. Step 4: Simplify right side
    156,375.99x = 18,290,233,228.60
  5. Step 5: Solve for x
    x = 18,290,233,228.60/156,375.99
  6. Step 6: Final answer
    x = 116,963.18

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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.