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Finding the Fourth Proportional to 172,900.98, 259,289.06 and 73,068.88

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Solution

The fourth proportional to 172,900.98, 259,289.06 and 73,068.88 is: 109,576.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,900.98 : 259,289.06 = 73,068.88 : x
  2. Step 2: Convert to fraction form
    172,900.98/259,289.06 = 73,068.88/x
  3. Step 3: Cross multiply
    172,900.98x = 259,289.06 × 73,068.88
  4. Step 4: Simplify right side
    172,900.98x = 18,945,961,210.45
  5. Step 5: Solve for x
    x = 18,945,961,210.45/172,900.98
  6. Step 6: Final answer
    x = 109,576.95

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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.