Home / 239,138.30-330,012.96-131,712.05

Finding the Fourth Proportional to 239,138.30, 330,012.96 and 131,712.05

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Solution

The fourth proportional to 239,138.30, 330,012.96 and 131,712.05 is: 181,763.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,138.30 : 330,012.96 = 131,712.05 : x
  2. Step 2: Convert to fraction form
    239,138.30/330,012.96 = 131,712.05/x
  3. Step 3: Cross multiply
    239,138.30x = 330,012.96 × 131,712.05
  4. Step 4: Simplify right side
    239,138.30x = 43,466,683,488.17
  5. Step 5: Solve for x
    x = 43,466,683,488.17/239,138.30
  6. Step 6: Final answer
    x = 181,763.79

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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.