Home / 104,859.83-157,134.22-77,021.75

Finding the Fourth Proportional to 104,859.83, 157,134.22 and 77,021.75

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Solution

The fourth proportional to 104,859.83, 157,134.22 and 77,021.75 is: 115,418.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,859.83 : 157,134.22 = 77,021.75 : x
  2. Step 2: Convert to fraction form
    104,859.83/157,134.22 = 77,021.75/x
  3. Step 3: Cross multiply
    104,859.83x = 157,134.22 × 77,021.75
  4. Step 4: Simplify right side
    104,859.83x = 12,102,752,609.29
  5. Step 5: Solve for x
    x = 12,102,752,609.29/104,859.83
  6. Step 6: Final answer
    x = 115,418.39

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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.