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Finding the Fourth Proportional to 170,080.80, 255,121.20 and 43,720.80

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Solution

The fourth proportional to 170,080.80, 255,121.20 and 43,720.80 is: 65,581.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,080.80 : 255,121.20 = 43,720.80 : x
  2. Step 2: Convert to fraction form
    170,080.80/255,121.20 = 43,720.80/x
  3. Step 3: Cross multiply
    170,080.80x = 255,121.20 × 43,720.80
  4. Step 4: Simplify right side
    170,080.80x = 11,154,102,960.96
  5. Step 5: Solve for x
    x = 11,154,102,960.96/170,080.80
  6. Step 6: Final answer
    x = 65,581.20

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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.