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Finding the Fourth Proportional to 156,086, 215,398.68 and 84,466.02

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Solution

The fourth proportional to 156,086, 215,398.68 and 84,466.02 is: 116,563.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,086 : 215,398.68 = 84,466.02 : x
  2. Step 2: Convert to fraction form
    156,086/215,398.68 = 84,466.02/x
  3. Step 3: Cross multiply
    156,086x = 215,398.68 × 84,466.02
  4. Step 4: Simplify right side
    156,086x = 18,193,869,212.85
  5. Step 5: Solve for x
    x = 18,193,869,212.85/156,086
  6. Step 6: Final answer
    x = 116,563.11

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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.