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Finding the Fourth Proportional to 171,681.29, 257,469.23 and 118,713.60

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Solution

The fourth proportional to 171,681.29, 257,469.23 and 118,713.60 is: 178,033.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,681.29 : 257,469.23 = 118,713.60 : x
  2. Step 2: Convert to fraction form
    171,681.29/257,469.23 = 118,713.60/x
  3. Step 3: Cross multiply
    171,681.29x = 257,469.23 × 118,713.60
  4. Step 4: Simplify right side
    171,681.29x = 30,565,099,479.31
  5. Step 5: Solve for x
    x = 30,565,099,479.31/171,681.29
  6. Step 6: Final answer
    x = 178,033.96

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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.