Home / 112,156,821.20-168,235,231.80-61,138,485.20

Finding the Fourth Proportional to 112,156,821.20, 168,235,231.80 and 61,138,485.20

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Solution

The fourth proportional to 112,156,821.20, 168,235,231.80 and 61,138,485.20 is: 91,707,727.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,156,821.20 : 168,235,231.80 = 61,138,485.20 : x
  2. Step 2: Convert to fraction form
    112,156,821.20/168,235,231.80 = 61,138,485.20/x
  3. Step 3: Cross multiply
    112,156,821.20x = 168,235,231.80 × 61,138,485.20
  4. Step 4: Simplify right side
    112,156,821.20x = 10,285,647,229,522,870
  5. Step 5: Solve for x
    x = 10,285,647,229,522,870/112,156,821.20
  6. Step 6: Final answer
    x = 91,707,727.80

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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.