Home / 161,071.41-222,389.75-100,669.21

Finding the Fourth Proportional to 161,071.41, 222,389.75 and 100,669.21

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Solution

The fourth proportional to 161,071.41, 222,389.75 and 100,669.21 is: 138,993.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,071.41 : 222,389.75 = 100,669.21 : x
  2. Step 2: Convert to fraction form
    161,071.41/222,389.75 = 100,669.21/x
  3. Step 3: Cross multiply
    161,071.41x = 222,389.75 × 100,669.21
  4. Step 4: Simplify right side
    161,071.41x = 22,387,800,140.30
  5. Step 5: Solve for x
    x = 22,387,800,140.30/161,071.41
  6. Step 6: Final answer
    x = 138,993.01

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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.