Home / 143,580.64-198,141.26-79,917.06

Finding the Fourth Proportional to 143,580.64, 198,141.26 and 79,917.06

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Solution

The fourth proportional to 143,580.64, 198,141.26 and 79,917.06 is: 110,285.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,580.64 : 198,141.26 = 79,917.06 : x
  2. Step 2: Convert to fraction form
    143,580.64/198,141.26 = 79,917.06/x
  3. Step 3: Cross multiply
    143,580.64x = 198,141.26 × 79,917.06
  4. Step 4: Simplify right side
    143,580.64x = 15,834,866,963.90
  5. Step 5: Solve for x
    x = 15,834,866,963.90/143,580.64
  6. Step 6: Final answer
    x = 110,285.53

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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.