Home / 143,889.78-198,560.61-80,215.26

Finding the Fourth Proportional to 143,889.78, 198,560.61 and 80,215.26

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Solution

The fourth proportional to 143,889.78, 198,560.61 and 80,215.26 is: 110,693.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,889.78 : 198,560.61 = 80,215.26 : x
  2. Step 2: Convert to fraction form
    143,889.78/198,560.61 = 80,215.26/x
  3. Step 3: Cross multiply
    143,889.78x = 198,560.61 × 80,215.26
  4. Step 4: Simplify right side
    143,889.78x = 15,927,590,956.91
  5. Step 5: Solve for x
    x = 15,927,590,956.91/143,889.78
  6. Step 6: Final answer
    x = 110,693.00

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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.