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Finding the Fourth Proportional to 135,676.70, 187,245.35 and 75,266.81

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Solution

The fourth proportional to 135,676.70, 187,245.35 and 75,266.81 is: 103,874.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,676.70 : 187,245.35 = 75,266.81 : x
  2. Step 2: Convert to fraction form
    135,676.70/187,245.35 = 75,266.81/x
  3. Step 3: Cross multiply
    135,676.70x = 187,245.35 × 75,266.81
  4. Step 4: Simplify right side
    135,676.70x = 14,093,360,181.83
  5. Step 5: Solve for x
    x = 14,093,360,181.83/135,676.70
  6. Step 6: Final answer
    x = 103,874.58

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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.