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Finding the Fourth Proportional to 90,186.68, 135,279.90 and 36,175.74

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Solution

The fourth proportional to 90,186.68, 135,279.90 and 36,175.74 is: 54,263.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,186.68 : 135,279.90 = 36,175.74 : x
  2. Step 2: Convert to fraction form
    90,186.68/135,279.90 = 36,175.74/x
  3. Step 3: Cross multiply
    90,186.68x = 135,279.90 × 36,175.74
  4. Step 4: Simplify right side
    90,186.68x = 4,893,850,489.63
  5. Step 5: Solve for x
    x = 4,893,850,489.63/90,186.68
  6. Step 6: Final answer
    x = 54,263.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.