Home / 259,705.58-389,509.16-91,186.29

Finding the Fourth Proportional to 259,705.58, 389,509.16 and 91,186.29

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Solution

The fourth proportional to 259,705.58, 389,509.16 and 91,186.29 is: 136,762.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,705.58 : 389,509.16 = 91,186.29 : x
  2. Step 2: Convert to fraction form
    259,705.58/389,509.16 = 91,186.29/x
  3. Step 3: Cross multiply
    259,705.58x = 389,509.16 × 91,186.29
  4. Step 4: Simplify right side
    259,705.58x = 35,517,894,765.49
  5. Step 5: Solve for x
    x = 35,517,894,765.49/259,705.58
  6. Step 6: Final answer
    x = 136,762.16

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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.