Home / 259,743.13-389,653.65-91,233.75

Finding the Fourth Proportional to 259,743.13, 389,653.65 and 91,233.75

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Solution

The fourth proportional to 259,743.13, 389,653.65 and 91,233.75 is: 136,864.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,743.13 : 389,653.65 = 91,233.75 : x
  2. Step 2: Convert to fraction form
    259,743.13/389,653.65 = 91,233.75/x
  3. Step 3: Cross multiply
    259,743.13x = 389,653.65 × 91,233.75
  4. Step 4: Simplify right side
    259,743.13x = 35,549,563,690.69
  5. Step 5: Solve for x
    x = 35,549,563,690.69/259,743.13
  6. Step 6: Final answer
    x = 136,864.31

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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.