Home / 137,721,268.80-190,049,220.24-78,941,794.56

Finding the Fourth Proportional to 137,721,268.80, 190,049,220.24 and 78,941,794.56

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Solution

The fourth proportional to 137,721,268.80, 190,049,220.24 and 78,941,794.56 is: 108,936,162.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,721,268.80 : 190,049,220.24 = 78,941,794.56 : x
  2. Step 2: Convert to fraction form
    137,721,268.80/190,049,220.24 = 78,941,794.56/x
  3. Step 3: Cross multiply
    137,721,268.80x = 190,049,220.24 × 78,941,794.56
  4. Step 4: Simplify right side
    137,721,268.80x = 15,002,826,500,474,276
  5. Step 5: Solve for x
    x = 15,002,826,500,474,276/137,721,268.80
  6. Step 6: Final answer
    x = 108,936,162.37

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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.