Home / 158,719.63-218,998.88-91,612.75

Finding the Fourth Proportional to 158,719.63, 218,998.88 and 91,612.75

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Solution

The fourth proportional to 158,719.63, 218,998.88 and 91,612.75 is: 126,405.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,719.63 : 218,998.88 = 91,612.75 : x
  2. Step 2: Convert to fraction form
    158,719.63/218,998.88 = 91,612.75/x
  3. Step 3: Cross multiply
    158,719.63x = 218,998.88 × 91,612.75
  4. Step 4: Simplify right side
    158,719.63x = 20,063,089,185.66
  5. Step 5: Solve for x
    x = 20,063,089,185.66/158,719.63
  6. Step 6: Final answer
    x = 126,405.85

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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.