Home / 161,563.31-222,812.21-101,139.45

Finding the Fourth Proportional to 161,563.31, 222,812.21 and 101,139.45

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Solution

The fourth proportional to 161,563.31, 222,812.21 and 101,139.45 is: 139,481.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,563.31 : 222,812.21 = 101,139.45 : x
  2. Step 2: Convert to fraction form
    161,563.31/222,812.21 = 101,139.45/x
  3. Step 3: Cross multiply
    161,563.31x = 222,812.21 × 101,139.45
  4. Step 4: Simplify right side
    161,563.31x = 22,535,103,866.99
  5. Step 5: Solve for x
    x = 22,535,103,866.99/161,563.31
  6. Step 6: Final answer
    x = 139,481.57

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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.