Home / 111,203,629.62-153,370,014.15-78,272,891.70

Finding the Fourth Proportional to 111,203,629.62, 153,370,014.15 and 78,272,891.70

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Solution

The fourth proportional to 111,203,629.62, 153,370,014.15 and 78,272,891.70 is: 107,952,542.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,203,629.62 : 153,370,014.15 = 78,272,891.70 : x
  2. Step 2: Convert to fraction form
    111,203,629.62/153,370,014.15 = 78,272,891.70/x
  3. Step 3: Cross multiply
    111,203,629.62x = 153,370,014.15 × 78,272,891.70
  4. Step 4: Simplify right side
    111,203,629.62x = 12,004,714,507,590,418
  5. Step 5: Solve for x
    x = 12,004,714,507,590,418/111,203,629.62
  6. Step 6: Final answer
    x = 107,952,542.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.