Home / 143,938.77-198,571.29-83,474.42

Finding the Fourth Proportional to 143,938.77, 198,571.29 and 83,474.42

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Solution

The fourth proportional to 143,938.77, 198,571.29 and 83,474.42 is: 115,157.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,938.77 : 198,571.29 = 83,474.42 : x
  2. Step 2: Convert to fraction form
    143,938.77/198,571.29 = 83,474.42/x
  3. Step 3: Cross multiply
    143,938.77x = 198,571.29 × 83,474.42
  4. Step 4: Simplify right side
    143,938.77x = 16,575,622,268.55
  5. Step 5: Solve for x
    x = 16,575,622,268.55/143,938.77
  6. Step 6: Final answer
    x = 115,157.45

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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.