Home / 136,170.09-187,912.02-75,739.43

Finding the Fourth Proportional to 136,170.09, 187,912.02 and 75,739.43

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Solution

The fourth proportional to 136,170.09, 187,912.02 and 75,739.43 is: 104,518.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,170.09 : 187,912.02 = 75,739.43 : x
  2. Step 2: Convert to fraction form
    136,170.09/187,912.02 = 75,739.43/x
  3. Step 3: Cross multiply
    136,170.09x = 187,912.02 × 75,739.43
  4. Step 4: Simplify right side
    136,170.09x = 14,232,349,284.95
  5. Step 5: Solve for x
    x = 14,232,349,284.95/136,170.09
  6. Step 6: Final answer
    x = 104,518.91

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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.