Home / 137,192,608.32-189,318,846.72-81,440,412

Finding the Fourth Proportional to 137,192,608.32, 189,318,846.72 and 81,440,412

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Solution

The fourth proportional to 137,192,608.32, 189,318,846.72 and 81,440,412 is: 112,383,641.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,192,608.32 : 189,318,846.72 = 81,440,412 : x
  2. Step 2: Convert to fraction form
    137,192,608.32/189,318,846.72 = 81,440,412/x
  3. Step 3: Cross multiply
    137,192,608.32x = 189,318,846.72 × 81,440,412
  4. Step 4: Simplify right side
    137,192,608.32x = 15,418,204,876,241,648
  5. Step 5: Solve for x
    x = 15,418,204,876,241,648/137,192,608.32
  6. Step 6: Final answer
    x = 112,383,641.25

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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.