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Finding the Fourth Proportional to 135,679.60, 187,249.05 and 75,269.70

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Solution

The fourth proportional to 135,679.60, 187,249.05 and 75,269.70 is: 103,878.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,679.60 : 187,249.05 = 75,269.70 : x
  2. Step 2: Convert to fraction form
    135,679.60/187,249.05 = 75,269.70/x
  3. Step 3: Cross multiply
    135,679.60x = 187,249.05 × 75,269.70
  4. Step 4: Simplify right side
    135,679.60x = 14,094,179,818.79
  5. Step 5: Solve for x
    x = 14,094,179,818.79/135,679.60
  6. Step 6: Final answer
    x = 103,878.40

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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.