Home / 345,791.18-518,562-146,126.99

Finding the Fourth Proportional to 345,791.18, 518,562 and 146,126.99

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Solution

The fourth proportional to 345,791.18, 518,562 and 146,126.99 is: 219,137.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,791.18 : 518,562 = 146,126.99 : x
  2. Step 2: Convert to fraction form
    345,791.18/518,562 = 146,126.99/x
  3. Step 3: Cross multiply
    345,791.18x = 518,562 × 146,126.99
  4. Step 4: Simplify right side
    345,791.18x = 75,775,905,484.79
  5. Step 5: Solve for x
    x = 75,775,905,484.79/345,791.18
  6. Step 6: Final answer
    x = 219,137.76

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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.