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Finding the Fourth Proportional to 125,486.56, 188,179.60 and 55,316

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Solution

The fourth proportional to 125,486.56, 188,179.60 and 55,316 is: 82,951.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,486.56 : 188,179.60 = 55,316 : x
  2. Step 2: Convert to fraction form
    125,486.56/188,179.60 = 55,316/x
  3. Step 3: Cross multiply
    125,486.56x = 188,179.60 × 55,316
  4. Step 4: Simplify right side
    125,486.56x = 10,409,342,753.60
  5. Step 5: Solve for x
    x = 10,409,342,753.60/125,486.56
  6. Step 6: Final answer
    x = 82,951.85

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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.