Home / 106,467.14-159,811.47-78,418.86

Finding the Fourth Proportional to 106,467.14, 159,811.47 and 78,418.86

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Solution

The fourth proportional to 106,467.14, 159,811.47 and 78,418.86 is: 117,709.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,467.14 : 159,811.47 = 78,418.86 : x
  2. Step 2: Convert to fraction form
    106,467.14/159,811.47 = 78,418.86/x
  3. Step 3: Cross multiply
    106,467.14x = 159,811.47 × 78,418.86
  4. Step 4: Simplify right side
    106,467.14x = 12,532,233,292.32
  5. Step 5: Solve for x
    x = 12,532,233,292.32/106,467.14
  6. Step 6: Final answer
    x = 117,709.88

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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.