Home / 259,681.40-389,667.90-109,896.20

Finding the Fourth Proportional to 259,681.40, 389,667.90 and 109,896.20

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Solution

The fourth proportional to 259,681.40, 389,667.90 and 109,896.20 is: 164,906.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,681.40 : 389,667.90 = 109,896.20 : x
  2. Step 2: Convert to fraction form
    259,681.40/389,667.90 = 109,896.20/x
  3. Step 3: Cross multiply
    259,681.40x = 389,667.90 × 109,896.20
  4. Step 4: Simplify right side
    259,681.40x = 42,823,021,471.98
  5. Step 5: Solve for x
    x = 42,823,021,471.98/259,681.40
  6. Step 6: Final answer
    x = 164,906.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.