Home / 125,227,144.42-172,741,660.62-78,102,403.54

Finding the Fourth Proportional to 125,227,144.42, 172,741,660.62 and 78,102,403.54

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Solution

The fourth proportional to 125,227,144.42, 172,741,660.62 and 78,102,403.54 is: 107,736,537.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,227,144.42 : 172,741,660.62 = 78,102,403.54 : x
  2. Step 2: Convert to fraction form
    125,227,144.42/172,741,660.62 = 78,102,403.54/x
  3. Step 3: Cross multiply
    125,227,144.42x = 172,741,660.62 × 78,102,403.54
  4. Step 4: Simplify right side
    125,227,144.42x = 13,491,538,885,049,258
  5. Step 5: Solve for x
    x = 13,491,538,885,049,258/125,227,144.42
  6. Step 6: Final answer
    x = 107,736,537.05

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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.