Home / 115,918.43-159,969.44-64,930.70

Finding the Fourth Proportional to 115,918.43, 159,969.44 and 64,930.70

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Solution

The fourth proportional to 115,918.43, 159,969.44 and 64,930.70 is: 89,605.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,918.43 : 159,969.44 = 64,930.70 : x
  2. Step 2: Convert to fraction form
    115,918.43/159,969.44 = 64,930.70/x
  3. Step 3: Cross multiply
    115,918.43x = 159,969.44 × 64,930.70
  4. Step 4: Simplify right side
    115,918.43x = 10,386,928,280.06
  5. Step 5: Solve for x
    x = 10,386,928,280.06/115,918.43
  6. Step 6: Final answer
    x = 89,605.50

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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.