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Finding the Fourth Proportional to 137,173.79, 189,339.68 and 79,826.51

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Solution

The fourth proportional to 137,173.79, 189,339.68 and 79,826.51 is: 110,183.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,173.79 : 189,339.68 = 79,826.51 : x
  2. Step 2: Convert to fraction form
    137,173.79/189,339.68 = 79,826.51/x
  3. Step 3: Cross multiply
    137,173.79x = 189,339.68 × 79,826.51
  4. Step 4: Simplify right side
    137,173.79x = 15,114,325,858.92
  5. Step 5: Solve for x
    x = 15,114,325,858.92/137,173.79
  6. Step 6: Final answer
    x = 110,183.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.