Home / 109,336.80-163,616.40-100,005.60

Finding the Fourth Proportional to 109,336.80, 163,616.40 and 100,005.60

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Solution

The fourth proportional to 109,336.80, 163,616.40 and 100,005.60 is: 149,652.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,336.80 : 163,616.40 = 100,005.60 : x
  2. Step 2: Convert to fraction form
    109,336.80/163,616.40 = 100,005.60/x
  3. Step 3: Cross multiply
    109,336.80x = 163,616.40 × 100,005.60
  4. Step 4: Simplify right side
    109,336.80x = 16,362,556,251.84
  5. Step 5: Solve for x
    x = 16,362,556,251.84/109,336.80
  6. Step 6: Final answer
    x = 149,652.78

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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.