Home / 138,112.20-207,178.74-38,271.24

Finding the Fourth Proportional to 138,112.20, 207,178.74 and 38,271.24

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Solution

The fourth proportional to 138,112.20, 207,178.74 and 38,271.24 is: 57,409.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,112.20 : 207,178.74 = 38,271.24 : x
  2. Step 2: Convert to fraction form
    138,112.20/207,178.74 = 38,271.24/x
  3. Step 3: Cross multiply
    138,112.20x = 207,178.74 × 38,271.24
  4. Step 4: Simplify right side
    138,112.20x = 7,928,987,281.44
  5. Step 5: Solve for x
    x = 7,928,987,281.44/138,112.20
  6. Step 6: Final answer
    x = 57,409.75

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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.