Home / 245,745.90-339,145.38-138,305.88

Finding the Fourth Proportional to 245,745.90, 339,145.38 and 138,305.88

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Solution

The fourth proportional to 245,745.90, 339,145.38 and 138,305.88 is: 190,871.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,745.90 : 339,145.38 = 138,305.88 : x
  2. Step 2: Convert to fraction form
    245,745.90/339,145.38 = 138,305.88/x
  3. Step 3: Cross multiply
    245,745.90x = 339,145.38 × 138,305.88
  4. Step 4: Simplify right side
    245,745.90x = 46,905,800,228.83
  5. Step 5: Solve for x
    x = 46,905,800,228.83/245,745.90
  6. Step 6: Final answer
    x = 190,871.14

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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.