Home / 104,615.10-156,771.20-72,123.95

Finding the Fourth Proportional to 104,615.10, 156,771.20 and 72,123.95

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Solution

The fourth proportional to 104,615.10, 156,771.20 and 72,123.95 is: 108,081.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,615.10 : 156,771.20 = 72,123.95 : x
  2. Step 2: Convert to fraction form
    104,615.10/156,771.20 = 72,123.95/x
  3. Step 3: Cross multiply
    104,615.10x = 156,771.20 × 72,123.95
  4. Step 4: Simplify right side
    104,615.10x = 11,306,958,221.55
  5. Step 5: Solve for x
    x = 11,306,958,221.55/104,615.10
  6. Step 6: Final answer
    x = 108,081.51

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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.