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Finding the Fourth Proportional to 156,366.98, 215,780.64 and 84,745.47

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Solution

The fourth proportional to 156,366.98, 215,780.64 and 84,745.47 is: 116,945.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,366.98 : 215,780.64 = 84,745.47 : x
  2. Step 2: Convert to fraction form
    156,366.98/215,780.64 = 84,745.47/x
  3. Step 3: Cross multiply
    156,366.98x = 215,780.64 × 84,745.47
  4. Step 4: Simplify right side
    156,366.98x = 18,286,431,753.70
  5. Step 5: Solve for x
    x = 18,286,431,753.70/156,366.98
  6. Step 6: Final answer
    x = 116,945.61

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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.