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Finding the Fourth Proportional to 66,119.28, 99,178.92 and 16,871.28

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Solution

The fourth proportional to 66,119.28, 99,178.92 and 16,871.28 is: 25,306.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,119.28 : 99,178.92 = 16,871.28 : x
  2. Step 2: Convert to fraction form
    66,119.28/99,178.92 = 16,871.28/x
  3. Step 3: Cross multiply
    66,119.28x = 99,178.92 × 16,871.28
  4. Step 4: Simplify right side
    66,119.28x = 1,673,275,329.42
  5. Step 5: Solve for x
    x = 1,673,275,329.42/66,119.28
  6. Step 6: Final answer
    x = 25,306.92

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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.