Home / 137,450.39-189,694.91-77,031.27

Finding the Fourth Proportional to 137,450.39, 189,694.91 and 77,031.27

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Solution

The fourth proportional to 137,450.39, 189,694.91 and 77,031.27 is: 106,310.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,450.39 : 189,694.91 = 77,031.27 : x
  2. Step 2: Convert to fraction form
    137,450.39/189,694.91 = 77,031.27/x
  3. Step 3: Cross multiply
    137,450.39x = 189,694.91 × 77,031.27
  4. Step 4: Simplify right side
    137,450.39x = 14,612,439,222.14
  5. Step 5: Solve for x
    x = 14,612,439,222.14/137,450.39
  6. Step 6: Final answer
    x = 106,310.64

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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.