Home / 143,745.38-198,368.69-80,087.34

Finding the Fourth Proportional to 143,745.38, 198,368.69 and 80,087.34

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Solution

The fourth proportional to 143,745.38, 198,368.69 and 80,087.34 is: 110,520.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,745.38 : 198,368.69 = 80,087.34 : x
  2. Step 2: Convert to fraction form
    143,745.38/198,368.69 = 80,087.34/x
  3. Step 3: Cross multiply
    143,745.38x = 198,368.69 × 80,087.34
  4. Step 4: Simplify right side
    143,745.38x = 15,886,820,320.95
  5. Step 5: Solve for x
    x = 15,886,820,320.95/143,745.38
  6. Step 6: Final answer
    x = 110,520.57

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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.