Home / 149,376.04-206,136.34-81,393.57

Finding the Fourth Proportional to 149,376.04, 206,136.34 and 81,393.57

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Solution

The fourth proportional to 149,376.04, 206,136.34 and 81,393.57 is: 112,321.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,376.04 : 206,136.34 = 81,393.57 : x
  2. Step 2: Convert to fraction form
    149,376.04/206,136.34 = 81,393.57/x
  3. Step 3: Cross multiply
    149,376.04x = 206,136.34 × 81,393.57
  4. Step 4: Simplify right side
    149,376.04x = 16,778,172,212.37
  5. Step 5: Solve for x
    x = 16,778,172,212.37/149,376.04
  6. Step 6: Final answer
    x = 112,321.71

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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.