Home / 221,605.09-305,779.40-126,113.38

Finding the Fourth Proportional to 221,605.09, 305,779.40 and 126,113.38

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Solution

The fourth proportional to 221,605.09, 305,779.40 and 126,113.38 is: 174,016.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,605.09 : 305,779.40 = 126,113.38 : x
  2. Step 2: Convert to fraction form
    221,605.09/305,779.40 = 126,113.38/x
  3. Step 3: Cross multiply
    221,605.09x = 305,779.40 × 126,113.38
  4. Step 4: Simplify right side
    221,605.09x = 38,562,873,668.37
  5. Step 5: Solve for x
    x = 38,562,873,668.37/221,605.09
  6. Step 6: Final answer
    x = 174,016.19

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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.