Home / 151,869.69-209,579.40-83,891.43

Finding the Fourth Proportional to 151,869.69, 209,579.40 and 83,891.43

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Solution

The fourth proportional to 151,869.69, 209,579.40 and 83,891.43 is: 115,769.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,869.69 : 209,579.40 = 83,891.43 : x
  2. Step 2: Convert to fraction form
    151,869.69/209,579.40 = 83,891.43/x
  3. Step 3: Cross multiply
    151,869.69x = 209,579.40 × 83,891.43
  4. Step 4: Simplify right side
    151,869.69x = 17,581,915,564.54
  5. Step 5: Solve for x
    x = 17,581,915,564.54/151,869.69
  6. Step 6: Final answer
    x = 115,769.75

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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.