Home / 143,828.66-198,490.36-80,166.92

Finding the Fourth Proportional to 143,828.66, 198,490.36 and 80,166.92

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Solution

The fourth proportional to 143,828.66, 198,490.36 and 80,166.92 is: 110,634.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,828.66 : 198,490.36 = 80,166.92 : x
  2. Step 2: Convert to fraction form
    143,828.66/198,490.36 = 80,166.92/x
  3. Step 3: Cross multiply
    143,828.66x = 198,490.36 × 80,166.92
  4. Step 4: Simplify right side
    143,828.66x = 15,912,360,810.89
  5. Step 5: Solve for x
    x = 15,912,360,810.89/143,828.66
  6. Step 6: Final answer
    x = 110,634.14

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1.5x scale

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.