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Finding the Fourth Proportional to 162,311.78, 223,986.06 and 90,692.39

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Solution

The fourth proportional to 162,311.78, 223,986.06 and 90,692.39 is: 125,153.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,311.78 : 223,986.06 = 90,692.39 : x
  2. Step 2: Convert to fraction form
    162,311.78/223,986.06 = 90,692.39/x
  3. Step 3: Cross multiply
    162,311.78x = 223,986.06 × 90,692.39
  4. Step 4: Simplify right side
    162,311.78x = 20,313,831,668.05
  5. Step 5: Solve for x
    x = 20,313,831,668.05/162,311.78
  6. Step 6: Final answer
    x = 125,153.15

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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.