Home / 143,729.48-198,352.80-80,067.28

Finding the Fourth Proportional to 143,729.48, 198,352.80 and 80,067.28

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Solution

The fourth proportional to 143,729.48, 198,352.80 and 80,067.28 is: 110,496.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,729.48 : 198,352.80 = 80,067.28 : x
  2. Step 2: Convert to fraction form
    143,729.48/198,352.80 = 80,067.28/x
  3. Step 3: Cross multiply
    143,729.48x = 198,352.80 × 80,067.28
  4. Step 4: Simplify right side
    143,729.48x = 15,881,569,176.38
  5. Step 5: Solve for x
    x = 15,881,569,176.38/143,729.48
  6. Step 6: Final answer
    x = 110,496.25

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1.5x scale

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.