Home / 225,911.89-338,688-111,979.51

Finding the Fourth Proportional to 225,911.89, 338,688 and 111,979.51

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Solution

The fourth proportional to 225,911.89, 338,688 and 111,979.51 is: 167,880.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,911.89 : 338,688 = 111,979.51 : x
  2. Step 2: Convert to fraction form
    225,911.89/338,688 = 111,979.51/x
  3. Step 3: Cross multiply
    225,911.89x = 338,688 × 111,979.51
  4. Step 4: Simplify right side
    225,911.89x = 37,926,116,282.88
  5. Step 5: Solve for x
    x = 37,926,116,282.88/225,911.89
  6. Step 6: Final answer
    x = 167,880.12

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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.