Home / 259,708.95-389,514.22-91,189.67

Finding the Fourth Proportional to 259,708.95, 389,514.22 and 91,189.67

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Solution

The fourth proportional to 259,708.95, 389,514.22 and 91,189.67 is: 136,767.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,708.95 : 389,514.22 = 91,189.67 : x
  2. Step 2: Convert to fraction form
    259,708.95/389,514.22 = 91,189.67/x
  3. Step 3: Cross multiply
    259,708.95x = 389,514.22 × 91,189.67
  4. Step 4: Simplify right side
    259,708.95x = 35,519,671,006.56
  5. Step 5: Solve for x
    x = 35,519,671,006.56/259,708.95
  6. Step 6: Final answer
    x = 136,767.22

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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.