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Finding the Fourth Proportional to 104,339.98, 156,160.05 and 85,619.26

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Solution

The fourth proportional to 104,339.98, 156,160.05 and 85,619.26 is: 128,141.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,339.98 : 156,160.05 = 85,619.26 : x
  2. Step 2: Convert to fraction form
    104,339.98/156,160.05 = 85,619.26/x
  3. Step 3: Cross multiply
    104,339.98x = 156,160.05 × 85,619.26
  4. Step 4: Simplify right side
    104,339.98x = 13,370,307,922.56
  5. Step 5: Solve for x
    x = 13,370,307,922.56/104,339.98
  6. Step 6: Final answer
    x = 128,141.75

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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.