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Finding the Fourth Proportional to 156,033.78, 215,355.75 and 88,965.78

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Solution

The fourth proportional to 156,033.78, 215,355.75 and 88,965.78 is: 122,789.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,033.78 : 215,355.75 = 88,965.78 : x
  2. Step 2: Convert to fraction form
    156,033.78/215,355.75 = 88,965.78/x
  3. Step 3: Cross multiply
    156,033.78x = 215,355.75 × 88,965.78
  4. Step 4: Simplify right side
    156,033.78x = 19,159,292,276.24
  5. Step 5: Solve for x
    x = 19,159,292,276.24/156,033.78
  6. Step 6: Final answer
    x = 122,789.39

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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.