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Finding the Fourth Proportional to 173,145.30, 259,766.55 and 84,401.70

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Solution

The fourth proportional to 173,145.30, 259,766.55 and 84,401.70 is: 126,626.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,145.30 : 259,766.55 = 84,401.70 : x
  2. Step 2: Convert to fraction form
    173,145.30/259,766.55 = 84,401.70/x
  3. Step 3: Cross multiply
    173,145.30x = 259,766.55 × 84,401.70
  4. Step 4: Simplify right side
    173,145.30x = 21,924,738,423.14
  5. Step 5: Solve for x
    x = 21,924,738,423.14/173,145.30
  6. Step 6: Final answer
    x = 126,626.24

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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.