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Finding the Fourth Proportional to 170,053.44, 254,728.80 and 99,720.96

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Solution

The fourth proportional to 170,053.44, 254,728.80 and 99,720.96 is: 149,375.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,053.44 : 254,728.80 = 99,720.96 : x
  2. Step 2: Convert to fraction form
    170,053.44/254,728.80 = 99,720.96/x
  3. Step 3: Cross multiply
    170,053.44x = 254,728.80 × 99,720.96
  4. Step 4: Simplify right side
    170,053.44x = 25,401,800,475.65
  5. Step 5: Solve for x
    x = 25,401,800,475.65/170,053.44
  6. Step 6: Final answer
    x = 149,375.40

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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.