Home / 90,850.80-136,276.20-90,267.60

Finding the Fourth Proportional to 90,850.80, 136,276.20 and 90,267.60

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Solution

The fourth proportional to 90,850.80, 136,276.20 and 90,267.60 is: 135,401.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,850.80 : 136,276.20 = 90,267.60 : x
  2. Step 2: Convert to fraction form
    90,850.80/136,276.20 = 90,267.60/x
  3. Step 3: Cross multiply
    90,850.80x = 136,276.20 × 90,267.60
  4. Step 4: Simplify right side
    90,850.80x = 12,301,325,511.12
  5. Step 5: Solve for x
    x = 12,301,325,511.12/90,850.80
  6. Step 6: Final answer
    x = 135,401.40

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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.