Home / 109,647.20-164,179.20-69,989.60

Finding the Fourth Proportional to 109,647.20, 164,179.20 and 69,989.60

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Solution

The fourth proportional to 109,647.20, 164,179.20 and 69,989.60 is: 104,798.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,647.20 : 164,179.20 = 69,989.60 : x
  2. Step 2: Convert to fraction form
    109,647.20/164,179.20 = 69,989.60/x
  3. Step 3: Cross multiply
    109,647.20x = 164,179.20 × 69,989.60
  4. Step 4: Simplify right side
    109,647.20x = 11,490,836,536.32
  5. Step 5: Solve for x
    x = 11,490,836,536.32/109,647.20
  6. Step 6: Final answer
    x = 104,798.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.