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Finding the Fourth Proportional to 125,684.99, 188,421.27 and 54,553.83

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Solution

The fourth proportional to 125,684.99, 188,421.27 and 54,553.83 is: 81,784.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,684.99 : 188,421.27 = 54,553.83 : x
  2. Step 2: Convert to fraction form
    125,684.99/188,421.27 = 54,553.83/x
  3. Step 3: Cross multiply
    125,684.99x = 188,421.27 × 54,553.83
  4. Step 4: Simplify right side
    125,684.99x = 10,279,101,931.96
  5. Step 5: Solve for x
    x = 10,279,101,931.96/125,684.99
  6. Step 6: Final answer
    x = 81,784.64

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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.