Home / 137,447.12-189,659.32-80,837.84

Finding the Fourth Proportional to 137,447.12, 189,659.32 and 80,837.84

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Solution

The fourth proportional to 137,447.12, 189,659.32 and 80,837.84 is: 111,545.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,447.12 : 189,659.32 = 80,837.84 : x
  2. Step 2: Convert to fraction form
    137,447.12/189,659.32 = 80,837.84/x
  3. Step 3: Cross multiply
    137,447.12x = 189,659.32 × 80,837.84
  4. Step 4: Simplify right side
    137,447.12x = 15,331,649,764.67
  5. Step 5: Solve for x
    x = 15,331,649,764.67/137,447.12
  6. Step 6: Final answer
    x = 111,545.81

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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.