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Finding the Fourth Proportional to 99,350.40, 149,025.60 and 90,310.80

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Solution

The fourth proportional to 99,350.40, 149,025.60 and 90,310.80 is: 135,466.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,350.40 : 149,025.60 = 90,310.80 : x
  2. Step 2: Convert to fraction form
    99,350.40/149,025.60 = 90,310.80/x
  3. Step 3: Cross multiply
    99,350.40x = 149,025.60 × 90,310.80
  4. Step 4: Simplify right side
    99,350.40x = 13,458,621,156.48
  5. Step 5: Solve for x
    x = 13,458,621,156.48/99,350.40
  6. Step 6: Final answer
    x = 135,466.20

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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.