Home / 143,890.52-198,566.19-79,365.76

Finding the Fourth Proportional to 143,890.52, 198,566.19 and 79,365.76

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Solution

The fourth proportional to 143,890.52, 198,566.19 and 79,365.76 is: 109,523.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,890.52 : 198,566.19 = 79,365.76 : x
  2. Step 2: Convert to fraction form
    143,890.52/198,566.19 = 79,365.76/x
  3. Step 3: Cross multiply
    143,890.52x = 198,566.19 × 79,365.76
  4. Step 4: Simplify right side
    143,890.52x = 15,759,356,579.65
  5. Step 5: Solve for x
    x = 15,759,356,579.65/143,890.52
  6. Step 6: Final answer
    x = 109,523.24

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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.