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Finding the Fourth Proportional to 104,608.90, 156,913.35 and 64,659.70

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Solution

The fourth proportional to 104,608.90, 156,913.35 and 64,659.70 is: 96,989.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,608.90 : 156,913.35 = 64,659.70 : x
  2. Step 2: Convert to fraction form
    104,608.90/156,913.35 = 64,659.70/x
  3. Step 3: Cross multiply
    104,608.90x = 156,913.35 × 64,659.70
  4. Step 4: Simplify right side
    104,608.90x = 10,145,970,137.00
  5. Step 5: Solve for x
    x = 10,145,970,137.00/104,608.90
  6. Step 6: Final answer
    x = 96,989.55

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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.