Home / 143,580.88-198,141.63-79,917.31

Finding the Fourth Proportional to 143,580.88, 198,141.63 and 79,917.31

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Solution

The fourth proportional to 143,580.88, 198,141.63 and 79,917.31 is: 110,285.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,580.88 : 198,141.63 = 79,917.31 : x
  2. Step 2: Convert to fraction form
    143,580.88/198,141.63 = 79,917.31/x
  3. Step 3: Cross multiply
    143,580.88x = 198,141.63 × 79,917.31
  4. Step 4: Simplify right side
    143,580.88x = 15,834,946,068.62
  5. Step 5: Solve for x
    x = 15,834,946,068.62/143,580.88
  6. Step 6: Final answer
    x = 110,285.90

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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.