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Finding the Fourth Proportional to 125,898.57, 188,829.19 and 45,917.79

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Solution

The fourth proportional to 125,898.57, 188,829.19 and 45,917.79 is: 68,869.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,898.57 : 188,829.19 = 45,917.79 : x
  2. Step 2: Convert to fraction form
    125,898.57/188,829.19 = 45,917.79/x
  3. Step 3: Cross multiply
    125,898.57x = 188,829.19 × 45,917.79
  4. Step 4: Simplify right side
    125,898.57x = 8,670,618,441.58
  5. Step 5: Solve for x
    x = 8,670,618,441.58/125,898.57
  6. Step 6: Final answer
    x = 68,869.87

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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.