Home / 136,131.87-187,834.45-79,532.31

Finding the Fourth Proportional to 136,131.87, 187,834.45 and 79,532.31

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Solution

The fourth proportional to 136,131.87, 187,834.45 and 79,532.31 is: 109,738.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,131.87 : 187,834.45 = 79,532.31 : x
  2. Step 2: Convert to fraction form
    136,131.87/187,834.45 = 79,532.31/x
  3. Step 3: Cross multiply
    136,131.87x = 187,834.45 × 79,532.31
  4. Step 4: Simplify right side
    136,131.87x = 14,938,907,706.08
  5. Step 5: Solve for x
    x = 14,938,907,706.08/136,131.87
  6. Step 6: Final answer
    x = 109,738.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.