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Finding the Fourth Proportional to 172,556.62, 258,714.84 and 76,441.63

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Solution

The fourth proportional to 172,556.62, 258,714.84 and 76,441.63 is: 114,609.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,556.62 : 258,714.84 = 76,441.63 : x
  2. Step 2: Convert to fraction form
    172,556.62/258,714.84 = 76,441.63/x
  3. Step 3: Cross multiply
    172,556.62x = 258,714.84 × 76,441.63
  4. Step 4: Simplify right side
    172,556.62x = 19,776,584,074.79
  5. Step 5: Solve for x
    x = 19,776,584,074.79/172,556.62
  6. Step 6: Final answer
    x = 114,609.25

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1.5x scale

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.