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Finding the Fourth Proportional to 171,971.04, 257,820.89 and 108,657.71

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Solution

The fourth proportional to 171,971.04, 257,820.89 and 108,657.71 is: 162,900.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,971.04 : 257,820.89 = 108,657.71 : x
  2. Step 2: Convert to fraction form
    171,971.04/257,820.89 = 108,657.71/x
  3. Step 3: Cross multiply
    171,971.04x = 257,820.89 × 108,657.71
  4. Step 4: Simplify right side
    171,971.04x = 28,014,227,497.56
  5. Step 5: Solve for x
    x = 28,014,227,497.56/171,971.04
  6. Step 6: Final answer
    x = 162,900.84

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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.