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Finding the Fourth Proportional to 109,477.65, 150,872.72 and 79,211.73

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Solution

The fourth proportional to 109,477.65, 150,872.72 and 79,211.73 is: 109,162.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,477.65 : 150,872.72 = 79,211.73 : x
  2. Step 2: Convert to fraction form
    109,477.65/150,872.72 = 79,211.73/x
  3. Step 3: Cross multiply
    109,477.65x = 150,872.72 × 79,211.73
  4. Step 4: Simplify right side
    109,477.65x = 11,950,888,764.95
  5. Step 5: Solve for x
    x = 11,950,888,764.95/109,477.65
  6. Step 6: Final answer
    x = 109,162.82

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1.5x scale

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.