Home / 100,401.41-150,674.96-80,915.24

Finding the Fourth Proportional to 100,401.41, 150,674.96 and 80,915.24

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Solution

The fourth proportional to 100,401.41, 150,674.96 and 80,915.24 is: 121,431.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,401.41 : 150,674.96 = 80,915.24 : x
  2. Step 2: Convert to fraction form
    100,401.41/150,674.96 = 80,915.24/x
  3. Step 3: Cross multiply
    100,401.41x = 150,674.96 × 80,915.24
  4. Step 4: Simplify right side
    100,401.41x = 12,191,901,129.37
  5. Step 5: Solve for x
    x = 12,191,901,129.37/100,401.41
  6. Step 6: Final answer
    x = 121,431.57

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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.