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Finding the Fourth Proportional to 135,676.50, 187,235.91 and 75,249.78

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Solution

The fourth proportional to 135,676.50, 187,235.91 and 75,249.78 is: 103,845.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,676.50 : 187,235.91 = 75,249.78 : x
  2. Step 2: Convert to fraction form
    135,676.50/187,235.91 = 75,249.78/x
  3. Step 3: Cross multiply
    135,676.50x = 187,235.91 × 75,249.78
  4. Step 4: Simplify right side
    135,676.50x = 14,089,461,035.60
  5. Step 5: Solve for x
    x = 14,089,461,035.60/135,676.50
  6. Step 6: Final answer
    x = 103,845.99

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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.