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Finding the Fourth Proportional to 156,276.73, 215,662.46 and 84,656.58

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Solution

The fourth proportional to 156,276.73, 215,662.46 and 84,656.58 is: 116,826.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,276.73 : 215,662.46 = 84,656.58 : x
  2. Step 2: Convert to fraction form
    156,276.73/215,662.46 = 84,656.58/x
  3. Step 3: Cross multiply
    156,276.73x = 215,662.46 × 84,656.58
  4. Step 4: Simplify right side
    156,276.73x = 18,257,246,297.99
  5. Step 5: Solve for x
    x = 18,257,246,297.99/156,276.73
  6. Step 6: Final answer
    x = 116,826.39

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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.