Home / 149,411.07-206,183.73-81,430.20

Finding the Fourth Proportional to 149,411.07, 206,183.73 and 81,430.20

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Solution

The fourth proportional to 149,411.07, 206,183.73 and 81,430.20 is: 112,371.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,411.07 : 206,183.73 = 81,430.20 : x
  2. Step 2: Convert to fraction form
    149,411.07/206,183.73 = 81,430.20/x
  3. Step 3: Cross multiply
    149,411.07x = 206,183.73 × 81,430.20
  4. Step 4: Simplify right side
    149,411.07x = 16,789,582,370.65
  5. Step 5: Solve for x
    x = 16,789,582,370.65/149,411.07
  6. Step 6: Final answer
    x = 112,371.74

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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.