Home / 115,918.66-159,969.78-64,930.96

Finding the Fourth Proportional to 115,918.66, 159,969.78 and 64,930.96

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Solution

The fourth proportional to 115,918.66, 159,969.78 and 64,930.96 is: 89,605.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,918.66 : 159,969.78 = 64,930.96 : x
  2. Step 2: Convert to fraction form
    115,918.66/159,969.78 = 64,930.96/x
  3. Step 3: Cross multiply
    115,918.66x = 159,969.78 × 64,930.96
  4. Step 4: Simplify right side
    115,918.66x = 10,386,991,386.39
  5. Step 5: Solve for x
    x = 10,386,991,386.39/115,918.66
  6. Step 6: Final answer
    x = 89,605.86

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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.