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Finding the Fourth Proportional to 156,270.66, 215,652.79 and 84,650.89

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Solution

The fourth proportional to 156,270.66, 215,652.79 and 84,650.89 is: 116,817.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,270.66 : 215,652.79 = 84,650.89 : x
  2. Step 2: Convert to fraction form
    156,270.66/215,652.79 = 84,650.89/x
  3. Step 3: Cross multiply
    156,270.66x = 215,652.79 × 84,650.89
  4. Step 4: Simplify right side
    156,270.66x = 18,255,200,604.48
  5. Step 5: Solve for x
    x = 18,255,200,604.48/156,270.66
  6. Step 6: Final answer
    x = 116,817.84

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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.