Home / 80,500,628.10-120,750,942.15-75,079,929.90

Finding the Fourth Proportional to 80,500,628.10, 120,750,942.15 and 75,079,929.90

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Solution

The fourth proportional to 80,500,628.10, 120,750,942.15 and 75,079,929.90 is: 112,619,894.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,500,628.10 : 120,750,942.15 = 75,079,929.90 : x
  2. Step 2: Convert to fraction form
    80,500,628.10/120,750,942.15 = 75,079,929.90/x
  3. Step 3: Cross multiply
    80,500,628.10x = 120,750,942.15 × 75,079,929.90
  4. Step 4: Simplify right side
    80,500,628.10x = 9,065,972,271,980,956
  5. Step 5: Solve for x
    x = 9,065,972,271,980,956/80,500,628.10
  6. Step 6: Final answer
    x = 112,619,894.85

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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.