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Finding the Fourth Proportional to 172,536.54, 258,815.70 and 54,212.58

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Solution

The fourth proportional to 172,536.54, 258,815.70 and 54,212.58 is: 81,322.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,536.54 : 258,815.70 = 54,212.58 : x
  2. Step 2: Convert to fraction form
    172,536.54/258,815.70 = 54,212.58/x
  3. Step 3: Cross multiply
    172,536.54x = 258,815.70 × 54,212.58
  4. Step 4: Simplify right side
    172,536.54x = 14,031,066,841.51
  5. Step 5: Solve for x
    x = 14,031,066,841.51/172,536.54
  6. Step 6: Final answer
    x = 81,322.29

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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.