Home / 136,129.59-187,831.31-79,530.03

Finding the Fourth Proportional to 136,129.59, 187,831.31 and 79,530.03

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Solution

The fourth proportional to 136,129.59, 187,831.31 and 79,530.03 is: 109,735.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,129.59 : 187,831.31 = 79,530.03 : x
  2. Step 2: Convert to fraction form
    136,129.59/187,831.31 = 79,530.03/x
  3. Step 3: Cross multiply
    136,129.59x = 187,831.31 × 79,530.03
  4. Step 4: Simplify right side
    136,129.59x = 14,938,229,321.59
  5. Step 5: Solve for x
    x = 14,938,229,321.59/136,129.59
  6. Step 6: Final answer
    x = 109,735.36

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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.