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Finding the Fourth Proportional to 104,650.70, 156,976.05 and 99,729.95

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Solution

The fourth proportional to 104,650.70, 156,976.05 and 99,729.95 is: 149,594.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,650.70 : 156,976.05 = 99,729.95 : x
  2. Step 2: Convert to fraction form
    104,650.70/156,976.05 = 99,729.95/x
  3. Step 3: Cross multiply
    104,650.70x = 156,976.05 × 99,729.95
  4. Step 4: Simplify right side
    104,650.70x = 15,655,213,617.70
  5. Step 5: Solve for x
    x = 15,655,213,617.70/104,650.70
  6. Step 6: Final answer
    x = 149,594.93

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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.