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Finding the Fourth Proportional to 172,475.81, 258,756.78 and 60,157.64

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Solution

The fourth proportional to 172,475.81, 258,756.78 and 60,157.64 is: 90,251.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,475.81 : 258,756.78 = 60,157.64 : x
  2. Step 2: Convert to fraction form
    172,475.81/258,756.78 = 60,157.64/x
  3. Step 3: Cross multiply
    172,475.81x = 258,756.78 × 60,157.64
  4. Step 4: Simplify right side
    172,475.81x = 15,566,196,918.01
  5. Step 5: Solve for x
    x = 15,566,196,918.01/172,475.81
  6. Step 6: Final answer
    x = 90,251.48

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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.