Home / 137,563.80-189,877.41-81,007.98

Finding the Fourth Proportional to 137,563.80, 189,877.41 and 81,007.98

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Solution

The fourth proportional to 137,563.80, 189,877.41 and 81,007.98 is: 111,814.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,563.80 : 189,877.41 = 81,007.98 : x
  2. Step 2: Convert to fraction form
    137,563.80/189,877.41 = 81,007.98/x
  3. Step 3: Cross multiply
    137,563.80x = 189,877.41 × 81,007.98
  4. Step 4: Simplify right side
    137,563.80x = 15,381,585,431.73
  5. Step 5: Solve for x
    x = 15,381,585,431.73/137,563.80
  6. Step 6: Final answer
    x = 111,814.19

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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.