Home / 138,933.46-191,728.37-75,271.26

Finding the Fourth Proportional to 138,933.46, 191,728.37 and 75,271.26

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Solution

The fourth proportional to 138,933.46, 191,728.37 and 75,271.26 is: 103,874.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,933.46 : 191,728.37 = 75,271.26 : x
  2. Step 2: Convert to fraction form
    138,933.46/191,728.37 = 75,271.26/x
  3. Step 3: Cross multiply
    138,933.46x = 191,728.37 × 75,271.26
  4. Step 4: Simplify right side
    138,933.46x = 14,431,634,652.65
  5. Step 5: Solve for x
    x = 14,431,634,652.65/138,933.46
  6. Step 6: Final answer
    x = 103,874.43

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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.