Home / 103,680.36-155,515.05-51,072.07

Finding the Fourth Proportional to 103,680.36, 155,515.05 and 51,072.07

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Solution

The fourth proportional to 103,680.36, 155,515.05 and 51,072.07 is: 76,605.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,680.36 : 155,515.05 = 51,072.07 : x
  2. Step 2: Convert to fraction form
    103,680.36/155,515.05 = 51,072.07/x
  3. Step 3: Cross multiply
    103,680.36x = 155,515.05 × 51,072.07
  4. Step 4: Simplify right side
    103,680.36x = 7,942,475,519.65
  5. Step 5: Solve for x
    x = 7,942,475,519.65/103,680.36
  6. Step 6: Final answer
    x = 76,605.40

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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.