Home / 223,669.56-308,663.82-128,171.64

Finding the Fourth Proportional to 223,669.56, 308,663.82 and 128,171.64

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Solution

The fourth proportional to 223,669.56, 308,663.82 and 128,171.64 is: 176,876.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,669.56 : 308,663.82 = 128,171.64 : x
  2. Step 2: Convert to fraction form
    223,669.56/308,663.82 = 128,171.64/x
  3. Step 3: Cross multiply
    223,669.56x = 308,663.82 × 128,171.64
  4. Step 4: Simplify right side
    223,669.56x = 39,561,948,018.06
  5. Step 5: Solve for x
    x = 39,561,948,018.06/223,669.56
  6. Step 6: Final answer
    x = 176,876.76

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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.