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Finding the Fourth Proportional to 104,651.70, 156,977.55 and 99,730.95

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Solution

The fourth proportional to 104,651.70, 156,977.55 and 99,730.95 is: 149,596.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,651.70 : 156,977.55 = 99,730.95 : x
  2. Step 2: Convert to fraction form
    104,651.70/156,977.55 = 99,730.95/x
  3. Step 3: Cross multiply
    104,651.70x = 156,977.55 × 99,730.95
  4. Step 4: Simplify right side
    104,651.70x = 15,655,520,190.17
  5. Step 5: Solve for x
    x = 15,655,520,190.17/104,651.70
  6. Step 6: Final answer
    x = 149,596.43

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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.