Home / 131,817.53-181,911.52-80,858.36

Finding the Fourth Proportional to 131,817.53, 181,911.52 and 80,858.36

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Solution

The fourth proportional to 131,817.53, 181,911.52 and 80,858.36 is: 111,586.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,817.53 : 181,911.52 = 80,858.36 : x
  2. Step 2: Convert to fraction form
    131,817.53/181,911.52 = 80,858.36/x
  3. Step 3: Cross multiply
    131,817.53x = 181,911.52 × 80,858.36
  4. Step 4: Simplify right side
    131,817.53x = 14,709,066,060.60
  5. Step 5: Solve for x
    x = 14,709,066,060.60/131,817.53
  6. Step 6: Final answer
    x = 111,586.57

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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.