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Finding the Fourth Proportional to 173,238.68, 259,875 and 72,015.80

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Solution

The fourth proportional to 173,238.68, 259,875 and 72,015.80 is: 108,030.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,238.68 : 259,875 = 72,015.80 : x
  2. Step 2: Convert to fraction form
    173,238.68/259,875 = 72,015.80/x
  3. Step 3: Cross multiply
    173,238.68x = 259,875 × 72,015.80
  4. Step 4: Simplify right side
    173,238.68x = 18,715,106,025
  5. Step 5: Solve for x
    x = 18,715,106,025/173,238.68
  6. Step 6: Final answer
    x = 108,030.76

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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.