Home / 143,326.09-197,788.83-77,914.49

Finding the Fourth Proportional to 143,326.09, 197,788.83 and 77,914.49

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Solution

The fourth proportional to 143,326.09, 197,788.83 and 77,914.49 is: 107,521.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,326.09 : 197,788.83 = 77,914.49 : x
  2. Step 2: Convert to fraction form
    143,326.09/197,788.83 = 77,914.49/x
  3. Step 3: Cross multiply
    143,326.09x = 197,788.83 × 77,914.49
  4. Step 4: Simplify right side
    143,326.09x = 15,410,615,817.15
  5. Step 5: Solve for x
    x = 15,410,615,817.15/143,326.09
  6. Step 6: Final answer
    x = 107,521.36

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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.