Home / 125,712.86-188,687.78-45,828.07

Finding the Fourth Proportional to 125,712.86, 188,687.78 and 45,828.07

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Solution

The fourth proportional to 125,712.86, 188,687.78 and 45,828.07 is: 68,785.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,712.86 : 188,687.78 = 45,828.07 : x
  2. Step 2: Convert to fraction form
    125,712.86/188,687.78 = 45,828.07/x
  3. Step 3: Cross multiply
    125,712.86x = 188,687.78 × 45,828.07
  4. Step 4: Simplify right side
    125,712.86x = 8,647,196,789.98
  5. Step 5: Solve for x
    x = 8,647,196,789.98/125,712.86
  6. Step 6: Final answer
    x = 68,785.30

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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.