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Finding the Fourth Proportional to 65,418.80, 98,128.20 and 16,170.80

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Solution

The fourth proportional to 65,418.80, 98,128.20 and 16,170.80 is: 24,256.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,418.80 : 98,128.20 = 16,170.80 : x
  2. Step 2: Convert to fraction form
    65,418.80/98,128.20 = 16,170.80/x
  3. Step 3: Cross multiply
    65,418.80x = 98,128.20 × 16,170.80
  4. Step 4: Simplify right side
    65,418.80x = 1,586,811,496.56
  5. Step 5: Solve for x
    x = 1,586,811,496.56/65,418.80
  6. Step 6: Final answer
    x = 24,256.20

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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.