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Finding the Fourth Proportional to 156,274.56, 215,658.03 and 84,655.98

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Solution

The fourth proportional to 156,274.56, 215,658.03 and 84,655.98 is: 116,824.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,274.56 : 215,658.03 = 84,655.98 : x
  2. Step 2: Convert to fraction form
    156,274.56/215,658.03 = 84,655.98/x
  3. Step 3: Cross multiply
    156,274.56x = 215,658.03 × 84,655.98
  4. Step 4: Simplify right side
    156,274.56x = 18,256,741,874.52
  5. Step 5: Solve for x
    x = 18,256,741,874.52/156,274.56
  6. Step 6: Final answer
    x = 116,824.79

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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.