Home / 161,905.74-223,431.38-89,311.41

Finding the Fourth Proportional to 161,905.74, 223,431.38 and 89,311.41

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Solution

The fourth proportional to 161,905.74, 223,431.38 and 89,311.41 is: 123,250.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,905.74 : 223,431.38 = 89,311.41 : x
  2. Step 2: Convert to fraction form
    161,905.74/223,431.38 = 89,311.41/x
  3. Step 3: Cross multiply
    161,905.74x = 223,431.38 × 89,311.41
  4. Step 4: Simplify right side
    161,905.74x = 19,954,971,139.49
  5. Step 5: Solve for x
    x = 19,954,971,139.49/161,905.74
  6. Step 6: Final answer
    x = 123,250.55

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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.