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Finding the Fourth Proportional to 172,718.48, 259,087.01 and 54,399.08

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Solution

The fourth proportional to 172,718.48, 259,087.01 and 54,399.08 is: 81,601.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,718.48 : 259,087.01 = 54,399.08 : x
  2. Step 2: Convert to fraction form
    172,718.48/259,087.01 = 54,399.08/x
  3. Step 3: Cross multiply
    172,718.48x = 259,087.01 × 54,399.08
  4. Step 4: Simplify right side
    172,718.48x = 14,094,095,359.67
  5. Step 5: Solve for x
    x = 14,094,095,359.67/172,718.48
  6. Step 6: Final answer
    x = 81,601.55

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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.