Home / 137,384,588.64-189,592,945.20-78,647,017.44

Finding the Fourth Proportional to 137,384,588.64, 189,592,945.20 and 78,647,017.44

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Solution

The fourth proportional to 137,384,588.64, 189,592,945.20 and 78,647,017.44 is: 108,534,150.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,384,588.64 : 189,592,945.20 = 78,647,017.44 : x
  2. Step 2: Convert to fraction form
    137,384,588.64/189,592,945.20 = 78,647,017.44/x
  3. Step 3: Cross multiply
    137,384,588.64x = 189,592,945.20 × 78,647,017.44
  4. Step 4: Simplify right side
    137,384,588.64x = 14,910,919,667,645,362
  5. Step 5: Solve for x
    x = 14,910,919,667,645,362/137,384,588.64
  6. Step 6: Final answer
    x = 108,534,150.85

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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.