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Finding the Fourth Proportional to 161,401.50, 222,734.07 and 90,745.50

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Solution

The fourth proportional to 161,401.50, 222,734.07 and 90,745.50 is: 125,228.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,401.50 : 222,734.07 = 90,745.50 : x
  2. Step 2: Convert to fraction form
    161,401.50/222,734.07 = 90,745.50/x
  3. Step 3: Cross multiply
    161,401.50x = 222,734.07 × 90,745.50
  4. Step 4: Simplify right side
    161,401.50x = 20,212,114,549.19
  5. Step 5: Solve for x
    x = 20,212,114,549.19/161,401.50
  6. Step 6: Final answer
    x = 125,228.79

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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.