Home / 143,268.58-197,660.12-81,970

Finding the Fourth Proportional to 143,268.58, 197,660.12 and 81,970

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Solution

The fourth proportional to 143,268.58, 197,660.12 and 81,970 is: 113,089.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,268.58 : 197,660.12 = 81,970 : x
  2. Step 2: Convert to fraction form
    143,268.58/197,660.12 = 81,970/x
  3. Step 3: Cross multiply
    143,268.58x = 197,660.12 × 81,970
  4. Step 4: Simplify right side
    143,268.58x = 16,202,200,036.40
  5. Step 5: Solve for x
    x = 16,202,200,036.40/143,268.58
  6. Step 6: Final answer
    x = 113,089.70

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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.