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Finding the Fourth Proportional to 104,347.83, 156,285.24 and 81,717.48

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Solution

The fourth proportional to 104,347.83, 156,285.24 and 81,717.48 is: 122,391.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,347.83 : 156,285.24 = 81,717.48 : x
  2. Step 2: Convert to fraction form
    104,347.83/156,285.24 = 81,717.48/x
  3. Step 3: Cross multiply
    104,347.83x = 156,285.24 × 81,717.48
  4. Step 4: Simplify right side
    104,347.83x = 12,771,235,974.00
  5. Step 5: Solve for x
    x = 12,771,235,974.00/104,347.83
  6. Step 6: Final answer
    x = 122,391.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.