Home / 131,914.26-198,136.05-78,710.13

Finding the Fourth Proportional to 131,914.26, 198,136.05 and 78,710.13

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Solution

The fourth proportional to 131,914.26, 198,136.05 and 78,710.13 is: 118,223.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,914.26 : 198,136.05 = 78,710.13 : x
  2. Step 2: Convert to fraction form
    131,914.26/198,136.05 = 78,710.13/x
  3. Step 3: Cross multiply
    131,914.26x = 198,136.05 × 78,710.13
  4. Step 4: Simplify right side
    131,914.26x = 15,595,314,179.40
  5. Step 5: Solve for x
    x = 15,595,314,179.40/131,914.26
  6. Step 6: Final answer
    x = 118,223.11

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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.