Home / 259,711.64-389,518.25-91,192.35

Finding the Fourth Proportional to 259,711.64, 389,518.25 and 91,192.35

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Solution

The fourth proportional to 259,711.64, 389,518.25 and 91,192.35 is: 136,771.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,711.64 : 389,518.25 = 91,192.35 : x
  2. Step 2: Convert to fraction form
    259,711.64/389,518.25 = 91,192.35/x
  3. Step 3: Cross multiply
    259,711.64x = 389,518.25 × 91,192.35
  4. Step 4: Simplify right side
    259,711.64x = 35,521,084,585.39
  5. Step 5: Solve for x
    x = 35,521,084,585.39/259,711.64
  6. Step 6: Final answer
    x = 136,771.25

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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.