Home / 142,163.43-196,219.19-81,768.98

Finding the Fourth Proportional to 142,163.43, 196,219.19 and 81,768.98

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Solution

The fourth proportional to 142,163.43, 196,219.19 and 81,768.98 is: 112,860.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,163.43 : 196,219.19 = 81,768.98 : x
  2. Step 2: Convert to fraction form
    142,163.43/196,219.19 = 81,768.98/x
  3. Step 3: Cross multiply
    142,163.43x = 196,219.19 × 81,768.98
  4. Step 4: Simplify right side
    142,163.43x = 16,044,641,632.79
  5. Step 5: Solve for x
    x = 16,044,641,632.79/142,163.43
  6. Step 6: Final answer
    x = 112,860.54

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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.