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Finding the Fourth Proportional to 125,684.55, 188,420.60 and 54,553.39

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Solution

The fourth proportional to 125,684.55, 188,420.60 and 54,553.39 is: 81,783.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,684.55 : 188,420.60 = 54,553.39 : x
  2. Step 2: Convert to fraction form
    125,684.55/188,420.60 = 54,553.39/x
  3. Step 3: Cross multiply
    125,684.55x = 188,420.60 × 54,553.39
  4. Step 4: Simplify right side
    125,684.55x = 10,278,982,141.17
  5. Step 5: Solve for x
    x = 10,278,982,141.17/125,684.55
  6. Step 6: Final answer
    x = 81,783.98

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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.