Home / 131,723.88-181,806.66-121,096.68

Finding the Fourth Proportional to 131,723.88, 181,806.66 and 121,096.68

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Solution

The fourth proportional to 131,723.88, 181,806.66 and 121,096.68 is: 167,138.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,723.88 : 181,806.66 = 121,096.68 : x
  2. Step 2: Convert to fraction form
    131,723.88/181,806.66 = 121,096.68/x
  3. Step 3: Cross multiply
    131,723.88x = 181,806.66 × 121,096.68
  4. Step 4: Simplify right side
    131,723.88x = 22,016,182,927.89
  5. Step 5: Solve for x
    x = 22,016,182,927.89/131,723.88
  6. Step 6: Final answer
    x = 167,138.89

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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.