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Finding the Fourth Proportional to 100,220.80, 150,331.20 and 93,611.20

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Solution

The fourth proportional to 100,220.80, 150,331.20 and 93,611.20 is: 140,416.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,220.80 : 150,331.20 = 93,611.20 : x
  2. Step 2: Convert to fraction form
    100,220.80/150,331.20 = 93,611.20/x
  3. Step 3: Cross multiply
    100,220.80x = 150,331.20 × 93,611.20
  4. Step 4: Simplify right side
    100,220.80x = 14,072,684,029.44
  5. Step 5: Solve for x
    x = 14,072,684,029.44/100,220.80
  6. Step 6: Final answer
    x = 140,416.80

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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.