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Finding the Fourth Proportional to 68,127.09, 102,156.29 and 20,733.09

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Solution

The fourth proportional to 68,127.09, 102,156.29 and 20,733.09 is: 31,089.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,127.09 : 102,156.29 = 20,733.09 : x
  2. Step 2: Convert to fraction form
    68,127.09/102,156.29 = 20,733.09/x
  3. Step 3: Cross multiply
    68,127.09x = 102,156.29 × 20,733.09
  4. Step 4: Simplify right side
    68,127.09x = 2,118,015,450.97
  5. Step 5: Solve for x
    x = 2,118,015,450.97/68,127.09
  6. Step 6: Final answer
    x = 31,089.18

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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.