Home / 161,168.90-222,414.40-100,774.55

Finding the Fourth Proportional to 161,168.90, 222,414.40 and 100,774.55

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Solution

The fourth proportional to 161,168.90, 222,414.40 and 100,774.55 is: 139,069.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,168.90 : 222,414.40 = 100,774.55 : x
  2. Step 2: Convert to fraction form
    161,168.90/222,414.40 = 100,774.55/x
  3. Step 3: Cross multiply
    161,168.90x = 222,414.40 × 100,774.55
  4. Step 4: Simplify right side
    161,168.90x = 22,413,711,073.52
  5. Step 5: Solve for x
    x = 22,413,711,073.52/161,168.90
  6. Step 6: Final answer
    x = 139,069.70

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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.