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Finding the Fourth Proportional to 210,081.45, 289,912.39 and 114,588.14

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Solution

The fourth proportional to 210,081.45, 289,912.39 and 114,588.14 is: 158,131.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,081.45 : 289,912.39 = 114,588.14 : x
  2. Step 2: Convert to fraction form
    210,081.45/289,912.39 = 114,588.14/x
  3. Step 3: Cross multiply
    210,081.45x = 289,912.39 × 114,588.14
  4. Step 4: Simplify right side
    210,081.45x = 33,220,521,533.05
  5. Step 5: Solve for x
    x = 33,220,521,533.05/210,081.45
  6. Step 6: Final answer
    x = 158,131.63

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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.