Home / 321,111.72-481,738.05-107,871.93

Finding the Fourth Proportional to 321,111.72, 481,738.05 and 107,871.93

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Solution

The fourth proportional to 321,111.72, 481,738.05 and 107,871.93 is: 161,831.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,111.72 : 481,738.05 = 107,871.93 : x
  2. Step 2: Convert to fraction form
    321,111.72/481,738.05 = 107,871.93/x
  3. Step 3: Cross multiply
    321,111.72x = 481,738.05 × 107,871.93
  4. Step 4: Simplify right side
    321,111.72x = 51,966,013,207.94
  5. Step 5: Solve for x
    x = 51,966,013,207.94/321,111.72
  6. Step 6: Final answer
    x = 161,831.57

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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.