Home / 131,890.84-197,395.62-78,409.24

Finding the Fourth Proportional to 131,890.84, 197,395.62 and 78,409.24

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Solution

The fourth proportional to 131,890.84, 197,395.62 and 78,409.24 is: 117,351.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,890.84 : 197,395.62 = 78,409.24 : x
  2. Step 2: Convert to fraction form
    131,890.84/197,395.62 = 78,409.24/x
  3. Step 3: Cross multiply
    131,890.84x = 197,395.62 × 78,409.24
  4. Step 4: Simplify right side
    131,890.84x = 15,477,640,543.53
  5. Step 5: Solve for x
    x = 15,477,640,543.53/131,890.84
  6. Step 6: Final answer
    x = 117,351.90

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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.