Home / 172,994.90-259,401.50-78,143.36

Finding the Fourth Proportional to 172,994.90, 259,401.50 and 78,143.36

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Solution

The fourth proportional to 172,994.90, 259,401.50 and 78,143.36 is: 117,174.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,994.90 : 259,401.50 = 78,143.36 : x
  2. Step 2: Convert to fraction form
    172,994.90/259,401.50 = 78,143.36/x
  3. Step 3: Cross multiply
    172,994.90x = 259,401.50 × 78,143.36
  4. Step 4: Simplify right side
    172,994.90x = 20,270,504,408.32
  5. Step 5: Solve for x
    x = 20,270,504,408.32/172,994.90
  6. Step 6: Final answer
    x = 117,174.00

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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.