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Finding the Fourth Proportional to 171,541.20, 257,312.42 and 121,469.84

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Solution

The fourth proportional to 171,541.20, 257,312.42 and 121,469.84 is: 182,205.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,541.20 : 257,312.42 = 121,469.84 : x
  2. Step 2: Convert to fraction form
    171,541.20/257,312.42 = 121,469.84/x
  3. Step 3: Cross multiply
    171,541.20x = 257,312.42 × 121,469.84
  4. Step 4: Simplify right side
    171,541.20x = 31,255,698,487.41
  5. Step 5: Solve for x
    x = 31,255,698,487.41/171,541.20
  6. Step 6: Final answer
    x = 182,205.20

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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.