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Finding the Fourth Proportional to 171,885.38, 257,931.74 and 73,389.38

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Solution

The fourth proportional to 171,885.38, 257,931.74 and 73,389.38 is: 110,128.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,885.38 : 257,931.74 = 73,389.38 : x
  2. Step 2: Convert to fraction form
    171,885.38/257,931.74 = 73,389.38/x
  3. Step 3: Cross multiply
    171,885.38x = 257,931.74 × 73,389.38
  4. Step 4: Simplify right side
    171,885.38x = 18,929,449,374.74
  5. Step 5: Solve for x
    x = 18,929,449,374.74/171,885.38
  6. Step 6: Final answer
    x = 110,128.33

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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.