Home / 131,531.04-181,469.81-80,490.56

Finding the Fourth Proportional to 131,531.04, 181,469.81 and 80,490.56

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Solution

The fourth proportional to 131,531.04, 181,469.81 and 80,490.56 is: 111,050.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,531.04 : 181,469.81 = 80,490.56 : x
  2. Step 2: Convert to fraction form
    131,531.04/181,469.81 = 80,490.56/x
  3. Step 3: Cross multiply
    131,531.04x = 181,469.81 × 80,490.56
  4. Step 4: Simplify right side
    131,531.04x = 14,606,606,629.99
  5. Step 5: Solve for x
    x = 14,606,606,629.99/131,531.04
  6. Step 6: Final answer
    x = 111,050.64

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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.