Home / 209,293.15-313,932.67-90,964.51

Finding the Fourth Proportional to 209,293.15, 313,932.67 and 90,964.51

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Solution

The fourth proportional to 209,293.15, 313,932.67 and 90,964.51 is: 136,443.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,293.15 : 313,932.67 = 90,964.51 : x
  2. Step 2: Convert to fraction form
    209,293.15/313,932.67 = 90,964.51/x
  3. Step 3: Cross multiply
    209,293.15x = 313,932.67 × 90,964.51
  4. Step 4: Simplify right side
    209,293.15x = 28,556,731,499.54
  5. Step 5: Solve for x
    x = 28,556,731,499.54/209,293.15
  6. Step 6: Final answer
    x = 136,443.70

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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.