Home / 126,381.66-189,478.93-76,449.61

Finding the Fourth Proportional to 126,381.66, 189,478.93 and 76,449.61

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Solution

The fourth proportional to 126,381.66, 189,478.93 and 76,449.61 is: 114,617.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,381.66 : 189,478.93 = 76,449.61 : x
  2. Step 2: Convert to fraction form
    126,381.66/189,478.93 = 76,449.61/x
  3. Step 3: Cross multiply
    126,381.66x = 189,478.93 × 76,449.61
  4. Step 4: Simplify right side
    126,381.66x = 14,485,590,301.72
  5. Step 5: Solve for x
    x = 14,485,590,301.72/126,381.66
  6. Step 6: Final answer
    x = 114,617.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.