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Finding the Fourth Proportional to 172,235.92, 258,303.66 and 67,029.88

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Solution

The fourth proportional to 172,235.92, 258,303.66 and 67,029.88 is: 100,525.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,235.92 : 258,303.66 = 67,029.88 : x
  2. Step 2: Convert to fraction form
    172,235.92/258,303.66 = 67,029.88/x
  3. Step 3: Cross multiply
    172,235.92x = 258,303.66 × 67,029.88
  4. Step 4: Simplify right side
    172,235.92x = 17,314,063,333.36
  5. Step 5: Solve for x
    x = 17,314,063,333.36/172,235.92
  6. Step 6: Final answer
    x = 100,525.28

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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.