Home / 161,165.90-222,410.26-100,771.55

Finding the Fourth Proportional to 161,165.90, 222,410.26 and 100,771.55

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Solution

The fourth proportional to 161,165.90, 222,410.26 and 100,771.55 is: 139,065.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,165.90 : 222,410.26 = 100,771.55 : x
  2. Step 2: Convert to fraction form
    161,165.90/222,410.26 = 100,771.55/x
  3. Step 3: Cross multiply
    161,165.90x = 222,410.26 × 100,771.55
  4. Step 4: Simplify right side
    161,165.90x = 22,412,627,318.09
  5. Step 5: Solve for x
    x = 22,412,627,318.09/161,165.90
  6. Step 6: Final answer
    x = 139,065.57

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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.