Home / 137,655.21-189,964.26-80,333.94

Finding the Fourth Proportional to 137,655.21, 189,964.26 and 80,333.94

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Solution

The fourth proportional to 137,655.21, 189,964.26 and 80,333.94 is: 110,860.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,655.21 : 189,964.26 = 80,333.94 : x
  2. Step 2: Convert to fraction form
    137,655.21/189,964.26 = 80,333.94/x
  3. Step 3: Cross multiply
    137,655.21x = 189,964.26 × 80,333.94
  4. Step 4: Simplify right side
    137,655.21x = 15,260,577,464.98
  5. Step 5: Solve for x
    x = 15,260,577,464.98/137,655.21
  6. Step 6: Final answer
    x = 110,860.88

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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.