Home / 143,917.60-198,606.72-79,385.28

Finding the Fourth Proportional to 143,917.60, 198,606.72 and 79,385.28

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Solution

The fourth proportional to 143,917.60, 198,606.72 and 79,385.28 is: 109,551.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,917.60 : 198,606.72 = 79,385.28 : x
  2. Step 2: Convert to fraction form
    143,917.60/198,606.72 = 79,385.28/x
  3. Step 3: Cross multiply
    143,917.60x = 198,606.72 × 79,385.28
  4. Step 4: Simplify right side
    143,917.60x = 15,766,450,077.08
  5. Step 5: Solve for x
    x = 15,766,450,077.08/143,917.60
  6. Step 6: Final answer
    x = 109,551.92

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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.