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Finding the Fourth Proportional to 104,516.20, 156,788.70 and 45,350.20

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Solution

The fourth proportional to 104,516.20, 156,788.70 and 45,350.20 is: 68,031.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,516.20 : 156,788.70 = 45,350.20 : x
  2. Step 2: Convert to fraction form
    104,516.20/156,788.70 = 45,350.20/x
  3. Step 3: Cross multiply
    104,516.20x = 156,788.70 × 45,350.20
  4. Step 4: Simplify right side
    104,516.20x = 7,110,398,902.74
  5. Step 5: Solve for x
    x = 7,110,398,902.74/104,516.20
  6. Step 6: Final answer
    x = 68,031.55

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1.5x scale

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.