Home / 136,131.09-187,833.37-79,531.53

Finding the Fourth Proportional to 136,131.09, 187,833.37 and 79,531.53

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Solution

The fourth proportional to 136,131.09, 187,833.37 and 79,531.53 is: 109,737.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,131.09 : 187,833.37 = 79,531.53 : x
  2. Step 2: Convert to fraction form
    136,131.09/187,833.37 = 79,531.53/x
  3. Step 3: Cross multiply
    136,131.09x = 187,833.37 × 79,531.53
  4. Step 4: Simplify right side
    136,131.09x = 14,938,675,301.16
  5. Step 5: Solve for x
    x = 14,938,675,301.16/136,131.09
  6. Step 6: Final answer
    x = 109,737.43

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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.