Home / 103,680.86-155,515.80-51,072.57

Finding the Fourth Proportional to 103,680.86, 155,515.80 and 51,072.57

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Solution

The fourth proportional to 103,680.86, 155,515.80 and 51,072.57 is: 76,606.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,680.86 : 155,515.80 = 51,072.57 : x
  2. Step 2: Convert to fraction form
    103,680.86/155,515.80 = 51,072.57/x
  3. Step 3: Cross multiply
    103,680.86x = 155,515.80 × 51,072.57
  4. Step 4: Simplify right side
    103,680.86x = 7,942,591,581.61
  5. Step 5: Solve for x
    x = 7,942,591,581.61/103,680.86
  6. Step 6: Final answer
    x = 76,606.15

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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.