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Finding the Fourth Proportional to 135,696.42, 187,261.74 and 75,262.86

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Solution

The fourth proportional to 135,696.42, 187,261.74 and 75,262.86 is: 103,863.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,696.42 : 187,261.74 = 75,262.86 : x
  2. Step 2: Convert to fraction form
    135,696.42/187,261.74 = 75,262.86/x
  3. Step 3: Cross multiply
    135,696.42x = 187,261.74 × 75,262.86
  4. Step 4: Simplify right side
    135,696.42x = 14,093,854,120.98
  5. Step 5: Solve for x
    x = 14,093,854,120.98/135,696.42
  6. Step 6: Final answer
    x = 103,863.12

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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.