Home / 106,476.53-159,382.49-78,428.25

Finding the Fourth Proportional to 106,476.53, 159,382.49 and 78,428.25

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Solution

The fourth proportional to 106,476.53, 159,382.49 and 78,428.25 is: 117,397.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,476.53 : 159,382.49 = 78,428.25 : x
  2. Step 2: Convert to fraction form
    106,476.53/159,382.49 = 78,428.25/x
  3. Step 3: Cross multiply
    106,476.53x = 159,382.49 × 78,428.25
  4. Step 4: Simplify right side
    106,476.53x = 12,500,089,379.20
  5. Step 5: Solve for x
    x = 12,500,089,379.20/106,476.53
  6. Step 6: Final answer
    x = 117,397.61

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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.