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Finding the Fourth Proportional to 173,161.40, 259,742.10 and 73,288.40

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Solution

The fourth proportional to 173,161.40, 259,742.10 and 73,288.40 is: 109,932.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,161.40 : 259,742.10 = 73,288.40 : x
  2. Step 2: Convert to fraction form
    173,161.40/259,742.10 = 73,288.40/x
  3. Step 3: Cross multiply
    173,161.40x = 259,742.10 × 73,288.40
  4. Step 4: Simplify right side
    173,161.40x = 19,036,082,921.64
  5. Step 5: Solve for x
    x = 19,036,082,921.64/173,161.40
  6. Step 6: Final answer
    x = 109,932.60

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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.