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Finding the Fourth Proportional to 76,110.60, 106,729.80 and 76,110.60

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Solution

The fourth proportional to 76,110.60, 106,729.80 and 76,110.60 is: 106,729.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,110.60 : 106,729.80 = 76,110.60 : x
  2. Step 2: Convert to fraction form
    76,110.60/106,729.80 = 76,110.60/x
  3. Step 3: Cross multiply
    76,110.60x = 106,729.80 × 76,110.60
  4. Step 4: Simplify right side
    76,110.60x = 8,123,269,115.88
  5. Step 5: Solve for x
    x = 8,123,269,115.88/76,110.60
  6. Step 6: Final answer
    x = 106,729.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.