Home / 305,791.18-458,651.13-81,169.07

Finding the Fourth Proportional to 305,791.18, 458,651.13 and 81,169.07

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Solution

The fourth proportional to 305,791.18, 458,651.13 and 81,169.07 is: 121,744.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,791.18 : 458,651.13 = 81,169.07 : x
  2. Step 2: Convert to fraction form
    305,791.18/458,651.13 = 81,169.07/x
  3. Step 3: Cross multiply
    305,791.18x = 458,651.13 × 81,169.07
  4. Step 4: Simplify right side
    305,791.18x = 37,228,283,938.88
  5. Step 5: Solve for x
    x = 37,228,283,938.88/305,791.18
  6. Step 6: Final answer
    x = 121,744.14

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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.