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Finding the Fourth Proportional to 104,630.10, 156,945.15 and 69,455.70

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Solution

The fourth proportional to 104,630.10, 156,945.15 and 69,455.70 is: 104,183.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,630.10 : 156,945.15 = 69,455.70 : x
  2. Step 2: Convert to fraction form
    104,630.10/156,945.15 = 69,455.70/x
  3. Step 3: Cross multiply
    104,630.10x = 156,945.15 × 69,455.70
  4. Step 4: Simplify right side
    104,630.10x = 10,900,735,254.86
  5. Step 5: Solve for x
    x = 10,900,735,254.86/104,630.10
  6. Step 6: Final answer
    x = 104,183.55

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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.