Home / 161,101.38-222,400.71-100,705.62

Finding the Fourth Proportional to 161,101.38, 222,400.71 and 100,705.62

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Solution

The fourth proportional to 161,101.38, 222,400.71 and 100,705.62 is: 139,024.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,101.38 : 222,400.71 = 100,705.62 : x
  2. Step 2: Convert to fraction form
    161,101.38/222,400.71 = 100,705.62/x
  3. Step 3: Cross multiply
    161,101.38x = 222,400.71 × 100,705.62
  4. Step 4: Simplify right side
    161,101.38x = 22,397,001,388.99
  5. Step 5: Solve for x
    x = 22,397,001,388.99/161,101.38
  6. Step 6: Final answer
    x = 139,024.27

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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.