Home / 223,021.51-307,761.45-121,044.78

Finding the Fourth Proportional to 223,021.51, 307,761.45 and 121,044.78

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Solution

The fourth proportional to 223,021.51, 307,761.45 and 121,044.78 is: 167,037.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,021.51 : 307,761.45 = 121,044.78 : x
  2. Step 2: Convert to fraction form
    223,021.51/307,761.45 = 121,044.78/x
  3. Step 3: Cross multiply
    223,021.51x = 307,761.45 × 121,044.78
  4. Step 4: Simplify right side
    223,021.51x = 37,252,917,777.13
  5. Step 5: Solve for x
    x = 37,252,917,777.13/223,021.51
  6. Step 6: Final answer
    x = 167,037.33

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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.