Home / 80,168,410.20-120,252,615.30-68,689,284.60

Finding the Fourth Proportional to 80,168,410.20, 120,252,615.30 and 68,689,284.60

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Solution

The fourth proportional to 80,168,410.20, 120,252,615.30 and 68,689,284.60 is: 103,033,926.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,168,410.20 : 120,252,615.30 = 68,689,284.60 : x
  2. Step 2: Convert to fraction form
    80,168,410.20/120,252,615.30 = 68,689,284.60/x
  3. Step 3: Cross multiply
    80,168,410.20x = 120,252,615.30 × 68,689,284.60
  4. Step 4: Simplify right side
    80,168,410.20x = 8,260,066,116,236,013
  5. Step 5: Solve for x
    x = 8,260,066,116,236,013/80,168,410.20
  6. Step 6: Final answer
    x = 103,033,926.90

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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.