Home / 223,965.27-309,072.49-121,990.41

Finding the Fourth Proportional to 223,965.27, 309,072.49 and 121,990.41

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Solution

The fourth proportional to 223,965.27, 309,072.49 and 121,990.41 is: 168,347.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,965.27 : 309,072.49 = 121,990.41 : x
  2. Step 2: Convert to fraction form
    223,965.27/309,072.49 = 121,990.41/x
  3. Step 3: Cross multiply
    223,965.27x = 309,072.49 × 121,990.41
  4. Step 4: Simplify right side
    223,965.27x = 37,703,879,774.82
  5. Step 5: Solve for x
    x = 37,703,879,774.82/223,965.27
  6. Step 6: Final answer
    x = 168,347.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.