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Finding the Fourth Proportional to 161,874.90, 222,879.03 and 137,628.18

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Solution

The fourth proportional to 161,874.90, 222,879.03 and 137,628.18 is: 189,494.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,874.90 : 222,879.03 = 137,628.18 : x
  2. Step 2: Convert to fraction form
    161,874.90/222,879.03 = 137,628.18/x
  3. Step 3: Cross multiply
    161,874.90x = 222,879.03 × 137,628.18
  4. Step 4: Simplify right side
    161,874.90x = 30,674,435,259.07
  5. Step 5: Solve for x
    x = 30,674,435,259.07/161,874.90
  6. Step 6: Final answer
    x = 189,494.70

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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.