Home / 68,147.51-102,221.23-18,226.31

Finding the Fourth Proportional to 68,147.51, 102,221.23 and 18,226.31

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Solution

The fourth proportional to 68,147.51, 102,221.23 and 18,226.31 is: 27,339.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,147.51 : 102,221.23 = 18,226.31 : x
  2. Step 2: Convert to fraction form
    68,147.51/102,221.23 = 18,226.31/x
  3. Step 3: Cross multiply
    68,147.51x = 102,221.23 × 18,226.31
  4. Step 4: Simplify right side
    68,147.51x = 1,863,115,269.89
  5. Step 5: Solve for x
    x = 1,863,115,269.89/68,147.51
  6. Step 6: Final answer
    x = 27,339.45

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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.