Home / 171,316.21-256,968.97-81,423.64

Finding the Fourth Proportional to 171,316.21, 256,968.97 and 81,423.64

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Solution

The fourth proportional to 171,316.21, 256,968.97 and 81,423.64 is: 122,132.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,316.21 : 256,968.97 = 81,423.64 : x
  2. Step 2: Convert to fraction form
    171,316.21/256,968.97 = 81,423.64/x
  3. Step 3: Cross multiply
    171,316.21x = 256,968.97 × 81,423.64
  4. Step 4: Simplify right side
    171,316.21x = 20,923,348,904.45
  5. Step 5: Solve for x
    x = 20,923,348,904.45/171,316.21
  6. Step 6: Final answer
    x = 122,132.92

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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.