Home / 113,485,295.20-170,227,942.80-78,847,880.80

Finding the Fourth Proportional to 113,485,295.20, 170,227,942.80 and 78,847,880.80

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Solution

The fourth proportional to 113,485,295.20, 170,227,942.80 and 78,847,880.80 is: 118,271,821.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,485,295.20 : 170,227,942.80 = 78,847,880.80 : x
  2. Step 2: Convert to fraction form
    113,485,295.20/170,227,942.80 = 78,847,880.80/x
  3. Step 3: Cross multiply
    113,485,295.20x = 170,227,942.80 × 78,847,880.80
  4. Step 4: Simplify right side
    113,485,295.20x = 13,422,112,542,723,618
  5. Step 5: Solve for x
    x = 13,422,112,542,723,618/113,485,295.20
  6. Step 6: Final answer
    x = 118,271,821.20

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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.