Home / 179,912.40-269,695.80-139,909.20

Finding the Fourth Proportional to 179,912.40, 269,695.80 and 139,909.20

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Solution

The fourth proportional to 179,912.40, 269,695.80 and 139,909.20 is: 209,729.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,912.40 : 269,695.80 = 139,909.20 : x
  2. Step 2: Convert to fraction form
    179,912.40/269,695.80 = 139,909.20/x
  3. Step 3: Cross multiply
    179,912.40x = 269,695.80 × 139,909.20
  4. Step 4: Simplify right side
    179,912.40x = 37,732,923,621.36
  5. Step 5: Solve for x
    x = 37,732,923,621.36/179,912.40
  6. Step 6: Final answer
    x = 209,729.42

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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.