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Finding the Fourth Proportional to 120,015.50, 165,621.40 and 67,023.50

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Solution

The fourth proportional to 120,015.50, 165,621.40 and 67,023.50 is: 92,492.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,015.50 : 165,621.40 = 67,023.50 : x
  2. Step 2: Convert to fraction form
    120,015.50/165,621.40 = 67,023.50/x
  3. Step 3: Cross multiply
    120,015.50x = 165,621.40 × 67,023.50
  4. Step 4: Simplify right side
    120,015.50x = 11,100,525,902.90
  5. Step 5: Solve for x
    x = 11,100,525,902.90/120,015.50
  6. Step 6: Final answer
    x = 92,492.44

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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.