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Finding the Fourth Proportional to 156,355.59, 215,770.68 and 84,735.61

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Solution

The fourth proportional to 156,355.59, 215,770.68 and 84,735.61 is: 116,935.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,355.59 : 215,770.68 = 84,735.61 : x
  2. Step 2: Convert to fraction form
    156,355.59/215,770.68 = 84,735.61/x
  3. Step 3: Cross multiply
    156,355.59x = 215,770.68 × 84,735.61
  4. Step 4: Simplify right side
    156,355.59x = 18,283,460,189.91
  5. Step 5: Solve for x
    x = 18,283,460,189.91/156,355.59
  6. Step 6: Final answer
    x = 116,935.12

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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.