Home / 68,127.09-102,190.98-20,742.59

Finding the Fourth Proportional to 68,127.09, 102,190.98 and 20,742.59

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Solution

The fourth proportional to 68,127.09, 102,190.98 and 20,742.59 is: 31,114.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,127.09 : 102,190.98 = 20,742.59 : x
  2. Step 2: Convert to fraction form
    68,127.09/102,190.98 = 20,742.59/x
  3. Step 3: Cross multiply
    68,127.09x = 102,190.98 × 20,742.59
  4. Step 4: Simplify right side
    68,127.09x = 2,119,705,933.10
  5. Step 5: Solve for x
    x = 2,119,705,933.10/68,127.09
  6. Step 6: Final answer
    x = 31,114.00

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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.