Home / 143,485.13-197,955.99-89,749.73

Finding the Fourth Proportional to 143,485.13, 197,955.99 and 89,749.73

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Solution

The fourth proportional to 143,485.13, 197,955.99 and 89,749.73 is: 123,821.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,485.13 : 197,955.99 = 89,749.73 : x
  2. Step 2: Convert to fraction form
    143,485.13/197,955.99 = 89,749.73/x
  3. Step 3: Cross multiply
    143,485.13x = 197,955.99 × 89,749.73
  4. Step 4: Simplify right side
    143,485.13x = 17,766,497,149.27
  5. Step 5: Solve for x
    x = 17,766,497,149.27/143,485.13
  6. Step 6: Final answer
    x = 123,821.17

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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.