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Finding the Fourth Proportional to 156,363.48, 215,775.82 and 84,741.96

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Solution

The fourth proportional to 156,363.48, 215,775.82 and 84,741.96 is: 116,940.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,363.48 : 215,775.82 = 84,741.96 : x
  2. Step 2: Convert to fraction form
    156,363.48/215,775.82 = 84,741.96/x
  3. Step 3: Cross multiply
    156,363.48x = 215,775.82 × 84,741.96
  4. Step 4: Simplify right side
    156,363.48x = 18,285,265,907.41
  5. Step 5: Solve for x
    x = 18,285,265,907.41/156,363.48
  6. Step 6: Final answer
    x = 116,940.77

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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.