Home / 143,742.96-198,365.25-83,348.76

Finding the Fourth Proportional to 143,742.96, 198,365.25 and 83,348.76

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Solution

The fourth proportional to 143,742.96, 198,365.25 and 83,348.76 is: 115,021.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,742.96 : 198,365.25 = 83,348.76 : x
  2. Step 2: Convert to fraction form
    143,742.96/198,365.25 = 83,348.76/x
  3. Step 3: Cross multiply
    143,742.96x = 198,365.25 × 83,348.76
  4. Step 4: Simplify right side
    143,742.96x = 16,533,497,614.59
  5. Step 5: Solve for x
    x = 16,533,497,614.59/143,742.96
  6. Step 6: Final answer
    x = 115,021.27

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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.