Home / 223,964.26-309,071.11-121,989.41

Finding the Fourth Proportional to 223,964.26, 309,071.11 and 121,989.41

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Solution

The fourth proportional to 223,964.26, 309,071.11 and 121,989.41 is: 168,345.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,964.26 : 309,071.11 = 121,989.41 : x
  2. Step 2: Convert to fraction form
    223,964.26/309,071.11 = 121,989.41/x
  3. Step 3: Cross multiply
    223,964.26x = 309,071.11 × 121,989.41
  4. Step 4: Simplify right side
    223,964.26x = 37,703,401,825.71
  5. Step 5: Solve for x
    x = 37,703,401,825.71/223,964.26
  6. Step 6: Final answer
    x = 168,345.62

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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.