Home / 143,760.96-198,390.93-83,367.45

Finding the Fourth Proportional to 143,760.96, 198,390.93 and 83,367.45

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Solution

The fourth proportional to 143,760.96, 198,390.93 and 83,367.45 is: 115,047.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,760.96 : 198,390.93 = 83,367.45 : x
  2. Step 2: Convert to fraction form
    143,760.96/198,390.93 = 83,367.45/x
  3. Step 3: Cross multiply
    143,760.96x = 198,390.93 × 83,367.45
  4. Step 4: Simplify right side
    143,760.96x = 16,539,346,768.75
  5. Step 5: Solve for x
    x = 16,539,346,768.75/143,760.96
  6. Step 6: Final answer
    x = 115,047.55

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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.