Home / 103,680.48-155,515.23-51,072.20

Finding the Fourth Proportional to 103,680.48, 155,515.23 and 51,072.20

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Solution

The fourth proportional to 103,680.48, 155,515.23 and 51,072.20 is: 76,605.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,680.48 : 155,515.23 = 51,072.20 : x
  2. Step 2: Convert to fraction form
    103,680.48/155,515.23 = 51,072.20/x
  3. Step 3: Cross multiply
    103,680.48x = 155,515.23 × 51,072.20
  4. Step 4: Simplify right side
    103,680.48x = 7,942,504,152.03
  5. Step 5: Solve for x
    x = 7,942,504,152.03/103,680.48
  6. Step 6: Final answer
    x = 76,605.59

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1.5x scale

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.