Home / 106,568.12-159,699.80-78,266.12

Finding the Fourth Proportional to 106,568.12, 159,699.80 and 78,266.12

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Solution

The fourth proportional to 106,568.12, 159,699.80 and 78,266.12 is: 117,287.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,568.12 : 159,699.80 = 78,266.12 : x
  2. Step 2: Convert to fraction form
    106,568.12/159,699.80 = 78,266.12/x
  3. Step 3: Cross multiply
    106,568.12x = 159,699.80 × 78,266.12
  4. Step 4: Simplify right side
    106,568.12x = 12,499,083,107.94
  5. Step 5: Solve for x
    x = 12,499,083,107.94/106,568.12
  6. Step 6: Final answer
    x = 117,287.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.