Home / 240,147.90-331,394.87-138,206.11

Finding the Fourth Proportional to 240,147.90, 331,394.87 and 138,206.11

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Solution

The fourth proportional to 240,147.90, 331,394.87 and 138,206.11 is: 190,719.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,147.90 : 331,394.87 = 138,206.11 : x
  2. Step 2: Convert to fraction form
    240,147.90/331,394.87 = 138,206.11/x
  3. Step 3: Cross multiply
    240,147.90x = 331,394.87 × 138,206.11
  4. Step 4: Simplify right side
    240,147.90x = 45,800,795,579.87
  5. Step 5: Solve for x
    x = 45,800,795,579.87/240,147.90
  6. Step 6: Final answer
    x = 190,719.11

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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.