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Finding the Fourth Proportional to 109,029.44, 163,218.24 and 66,776.48

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Solution

The fourth proportional to 109,029.44, 163,218.24 and 66,776.48 is: 99,965.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,029.44 : 163,218.24 = 66,776.48 : x
  2. Step 2: Convert to fraction form
    109,029.44/163,218.24 = 66,776.48/x
  3. Step 3: Cross multiply
    109,029.44x = 163,218.24 × 66,776.48
  4. Step 4: Simplify right side
    109,029.44x = 10,899,139,539.00
  5. Step 5: Solve for x
    x = 10,899,139,539.00/109,029.44
  6. Step 6: Final answer
    x = 99,965.11

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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.