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Finding the Fourth Proportional to 156,277.53, 215,662.80 and 84,657.85

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Solution

The fourth proportional to 156,277.53, 215,662.80 and 84,657.85 is: 116,827.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,277.53 : 215,662.80 = 84,657.85 : x
  2. Step 2: Convert to fraction form
    156,277.53/215,662.80 = 84,657.85/x
  3. Step 3: Cross multiply
    156,277.53x = 215,662.80 × 84,657.85
  4. Step 4: Simplify right side
    156,277.53x = 18,257,548,972.98
  5. Step 5: Solve for x
    x = 18,257,548,972.98/156,277.53
  6. Step 6: Final answer
    x = 116,827.73

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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.