Home / 68,178.06-102,268.17-21,430.98

Finding the Fourth Proportional to 68,178.06, 102,268.17 and 21,430.98

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Solution

The fourth proportional to 68,178.06, 102,268.17 and 21,430.98 is: 32,146.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,178.06 : 102,268.17 = 21,430.98 : x
  2. Step 2: Convert to fraction form
    68,178.06/102,268.17 = 21,430.98/x
  3. Step 3: Cross multiply
    68,178.06x = 102,268.17 × 21,430.98
  4. Step 4: Simplify right side
    68,178.06x = 2,191,707,105.91
  5. Step 5: Solve for x
    x = 2,191,707,105.91/68,178.06
  6. Step 6: Final answer
    x = 32,146.81

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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.