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Finding the Fourth Proportional to 172,674.21, 259,038.99 and 72,849.11

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Solution

The fourth proportional to 172,674.21, 259,038.99 and 72,849.11 is: 109,285.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,674.21 : 259,038.99 = 72,849.11 : x
  2. Step 2: Convert to fraction form
    172,674.21/259,038.99 = 72,849.11/x
  3. Step 3: Cross multiply
    172,674.21x = 259,038.99 × 72,849.11
  4. Step 4: Simplify right side
    172,674.21x = 18,870,758,581.60
  5. Step 5: Solve for x
    x = 18,870,758,581.60/172,674.21
  6. Step 6: Final answer
    x = 109,285.34

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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.