Home / 138,933.44-191,728.35-75,271.24

Finding the Fourth Proportional to 138,933.44, 191,728.35 and 75,271.24

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Solution

The fourth proportional to 138,933.44, 191,728.35 and 75,271.24 is: 103,874.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,933.44 : 191,728.35 = 75,271.24 : x
  2. Step 2: Convert to fraction form
    138,933.44/191,728.35 = 75,271.24/x
  3. Step 3: Cross multiply
    138,933.44x = 191,728.35 × 75,271.24
  4. Step 4: Simplify right side
    138,933.44x = 14,431,630,647.65
  5. Step 5: Solve for x
    x = 14,431,630,647.65/138,933.44
  6. Step 6: Final answer
    x = 103,874.42

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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.