Home / 136,820.44-188,831.09-76,395

Finding the Fourth Proportional to 136,820.44, 188,831.09 and 76,395

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Solution

The fourth proportional to 136,820.44, 188,831.09 and 76,395 is: 105,435.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,820.44 : 188,831.09 = 76,395 : x
  2. Step 2: Convert to fraction form
    136,820.44/188,831.09 = 76,395/x
  3. Step 3: Cross multiply
    136,820.44x = 188,831.09 × 76,395
  4. Step 4: Simplify right side
    136,820.44x = 14,425,751,120.55
  5. Step 5: Solve for x
    x = 14,425,751,120.55/136,820.44
  6. Step 6: Final answer
    x = 105,435.64

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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.