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Finding the Fourth Proportional to 109,599.20, 164,107.20 and 69,941.60

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Solution

The fourth proportional to 109,599.20, 164,107.20 and 69,941.60 is: 104,726.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,599.20 : 164,107.20 = 69,941.60 : x
  2. Step 2: Convert to fraction form
    109,599.20/164,107.20 = 69,941.60/x
  3. Step 3: Cross multiply
    109,599.20x = 164,107.20 × 69,941.60
  4. Step 4: Simplify right side
    109,599.20x = 11,477,920,139.52
  5. Step 5: Solve for x
    x = 11,477,920,139.52/109,599.20
  6. Step 6: Final answer
    x = 104,726.31

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1.5x scale

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.