Home / 106,746.96-159,990.97-78,404.21

Finding the Fourth Proportional to 106,746.96, 159,990.97 and 78,404.21

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Solution

The fourth proportional to 106,746.96, 159,990.97 and 78,404.21 is: 117,511.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,746.96 : 159,990.97 = 78,404.21 : x
  2. Step 2: Convert to fraction form
    106,746.96/159,990.97 = 78,404.21/x
  3. Step 3: Cross multiply
    106,746.96x = 159,990.97 × 78,404.21
  4. Step 4: Simplify right side
    106,746.96x = 12,543,965,707.99
  5. Step 5: Solve for x
    x = 12,543,965,707.99/106,746.96
  6. Step 6: Final answer
    x = 117,511.22

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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.