Home / 131,091.20-196,636.80-89,619.20

Finding the Fourth Proportional to 131,091.20, 196,636.80 and 89,619.20

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Solution

The fourth proportional to 131,091.20, 196,636.80 and 89,619.20 is: 134,428.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,091.20 : 196,636.80 = 89,619.20 : x
  2. Step 2: Convert to fraction form
    131,091.20/196,636.80 = 89,619.20/x
  3. Step 3: Cross multiply
    131,091.20x = 196,636.80 × 89,619.20
  4. Step 4: Simplify right side
    131,091.20x = 17,622,432,706.56
  5. Step 5: Solve for x
    x = 17,622,432,706.56/131,091.20
  6. Step 6: Final answer
    x = 134,428.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.