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Finding the Fourth Proportional to 131,173.30, 181,015.17 and 73,815.82

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Solution

The fourth proportional to 131,173.30, 181,015.17 and 73,815.82 is: 101,863.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,173.30 : 181,015.17 = 73,815.82 : x
  2. Step 2: Convert to fraction form
    131,173.30/181,015.17 = 73,815.82/x
  3. Step 3: Cross multiply
    131,173.30x = 181,015.17 × 73,815.82
  4. Step 4: Simplify right side
    131,173.30x = 13,361,783,205.99
  5. Step 5: Solve for x
    x = 13,361,783,205.99/131,173.30
  6. Step 6: Final answer
    x = 101,863.59

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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.