Home / 214,521.40-321,678.42-125,803.72

Finding the Fourth Proportional to 214,521.40, 321,678.42 and 125,803.72

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Solution

The fourth proportional to 214,521.40, 321,678.42 and 125,803.72 is: 188,644.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,521.40 : 321,678.42 = 125,803.72 : x
  2. Step 2: Convert to fraction form
    214,521.40/321,678.42 = 125,803.72/x
  3. Step 3: Cross multiply
    214,521.40x = 321,678.42 × 125,803.72
  4. Step 4: Simplify right side
    214,521.40x = 40,468,341,879.72
  5. Step 5: Solve for x
    x = 40,468,341,879.72/214,521.40
  6. Step 6: Final answer
    x = 188,644.78

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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.