Home / 99,512.20-149,268.30-68,019.40

Finding the Fourth Proportional to 99,512.20, 149,268.30 and 68,019.40

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Solution

The fourth proportional to 99,512.20, 149,268.30 and 68,019.40 is: 102,029.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,512.20 : 149,268.30 = 68,019.40 : x
  2. Step 2: Convert to fraction form
    99,512.20/149,268.30 = 68,019.40/x
  3. Step 3: Cross multiply
    99,512.20x = 149,268.30 × 68,019.40
  4. Step 4: Simplify right side
    99,512.20x = 10,153,140,205.02
  5. Step 5: Solve for x
    x = 10,153,140,205.02/99,512.20
  6. Step 6: Final answer
    x = 102,029.10

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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.