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Finding the Fourth Proportional to 107,989.50, 149,015.16 and 60,245.92

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Solution

The fourth proportional to 107,989.50, 149,015.16 and 60,245.92 is: 83,133.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,989.50 : 149,015.16 = 60,245.92 : x
  2. Step 2: Convert to fraction form
    107,989.50/149,015.16 = 60,245.92/x
  3. Step 3: Cross multiply
    107,989.50x = 149,015.16 × 60,245.92
  4. Step 4: Simplify right side
    107,989.50x = 8,977,555,408.15
  5. Step 5: Solve for x
    x = 8,977,555,408.15/107,989.50
  6. Step 6: Final answer
    x = 83,133.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.