Home / 148,640.21-205,065.09-84,943.83

Finding the Fourth Proportional to 148,640.21, 205,065.09 and 84,943.83

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Solution

The fourth proportional to 148,640.21, 205,065.09 and 84,943.83 is: 117,189.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,640.21 : 205,065.09 = 84,943.83 : x
  2. Step 2: Convert to fraction form
    148,640.21/205,065.09 = 84,943.83/x
  3. Step 3: Cross multiply
    148,640.21x = 205,065.09 × 84,943.83
  4. Step 4: Simplify right side
    148,640.21x = 17,419,014,143.89
  5. Step 5: Solve for x
    x = 17,419,014,143.89/148,640.21
  6. Step 6: Final answer
    x = 117,189.12

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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.