Home / 142,469.57-196,618.67-81,217.22

Finding the Fourth Proportional to 142,469.57, 196,618.67 and 81,217.22

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Solution

The fourth proportional to 142,469.57, 196,618.67 and 81,217.22 is: 112,085.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,469.57 : 196,618.67 = 81,217.22 : x
  2. Step 2: Convert to fraction form
    142,469.57/196,618.67 = 81,217.22/x
  3. Step 3: Cross multiply
    142,469.57x = 196,618.67 × 81,217.22
  4. Step 4: Simplify right side
    142,469.57x = 15,968,821,777.50
  5. Step 5: Solve for x
    x = 15,968,821,777.50/142,469.57
  6. Step 6: Final answer
    x = 112,085.84

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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.