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Finding the Fourth Proportional to 135,611.78, 187,150.41 and 77,473.64

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Solution

The fourth proportional to 135,611.78, 187,150.41 and 77,473.64 is: 106,917.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,611.78 : 187,150.41 = 77,473.64 : x
  2. Step 2: Convert to fraction form
    135,611.78/187,150.41 = 77,473.64/x
  3. Step 3: Cross multiply
    135,611.78x = 187,150.41 × 77,473.64
  4. Step 4: Simplify right side
    135,611.78x = 14,499,222,554.44
  5. Step 5: Solve for x
    x = 14,499,222,554.44/135,611.78
  6. Step 6: Final answer
    x = 106,917.14

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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.