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Finding the Fourth Proportional to 125,666.66, 188,513.73 and 54,540.40

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Solution

The fourth proportional to 125,666.66, 188,513.73 and 54,540.40 is: 81,816.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,666.66 : 188,513.73 = 54,540.40 : x
  2. Step 2: Convert to fraction form
    125,666.66/188,513.73 = 54,540.40/x
  3. Step 3: Cross multiply
    125,666.66x = 188,513.73 × 54,540.40
  4. Step 4: Simplify right side
    125,666.66x = 10,281,614,239.69
  5. Step 5: Solve for x
    x = 10,281,614,239.69/125,666.66
  6. Step 6: Final answer
    x = 81,816.56

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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.