Home / 121,421.80-182,122.46-68,665.32

Finding the Fourth Proportional to 121,421.80, 182,122.46 and 68,665.32

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Solution

The fourth proportional to 121,421.80, 182,122.46 and 68,665.32 is: 102,992.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,421.80 : 182,122.46 = 68,665.32 : x
  2. Step 2: Convert to fraction form
    121,421.80/182,122.46 = 68,665.32/x
  3. Step 3: Cross multiply
    121,421.80x = 182,122.46 × 68,665.32
  4. Step 4: Simplify right side
    121,421.80x = 12,505,496,995.09
  5. Step 5: Solve for x
    x = 12,505,496,995.09/121,421.80
  6. Step 6: Final answer
    x = 102,992.19

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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.