Home / 68,190.14-102,300.69-20,809.46

Finding the Fourth Proportional to 68,190.14, 102,300.69 and 20,809.46

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Solution

The fourth proportional to 68,190.14, 102,300.69 and 20,809.46 is: 31,218.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,190.14 : 102,300.69 = 20,809.46 : x
  2. Step 2: Convert to fraction form
    68,190.14/102,300.69 = 20,809.46/x
  3. Step 3: Cross multiply
    68,190.14x = 102,300.69 × 20,809.46
  4. Step 4: Simplify right side
    68,190.14x = 2,128,822,450.31
  5. Step 5: Solve for x
    x = 2,128,822,450.31/68,190.14
  6. Step 6: Final answer
    x = 31,218.92

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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.