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Finding the Fourth Proportional to 109,215.80, 163,815.60 and 46,019.60

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Solution

The fourth proportional to 109,215.80, 163,815.60 and 46,019.60 is: 69,025.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,215.80 : 163,815.60 = 46,019.60 : x
  2. Step 2: Convert to fraction form
    109,215.80/163,815.60 = 46,019.60/x
  3. Step 3: Cross multiply
    109,215.80x = 163,815.60 × 46,019.60
  4. Step 4: Simplify right side
    109,215.80x = 7,538,728,385.76
  5. Step 5: Solve for x
    x = 7,538,728,385.76/109,215.80
  6. Step 6: Final answer
    x = 69,025.99

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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.