Home / 115,918.41-159,969.44-64,930.71

Finding the Fourth Proportional to 115,918.41, 159,969.44 and 64,930.71

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Solution

The fourth proportional to 115,918.41, 159,969.44 and 64,930.71 is: 89,605.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,918.41 : 159,969.44 = 64,930.71 : x
  2. Step 2: Convert to fraction form
    115,918.41/159,969.44 = 64,930.71/x
  3. Step 3: Cross multiply
    115,918.41x = 159,969.44 × 64,930.71
  4. Step 4: Simplify right side
    115,918.41x = 10,386,928,992.85
  5. Step 5: Solve for x
    x = 10,386,928,992.85/115,918.41
  6. Step 6: Final answer
    x = 89,605.52

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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.