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Finding the Fourth Proportional to 171,989.30, 257,836.94 and 65,313.52

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Solution

The fourth proportional to 171,989.30, 257,836.94 and 65,313.52 is: 97,914.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,989.30 : 257,836.94 = 65,313.52 : x
  2. Step 2: Convert to fraction form
    171,989.30/257,836.94 = 65,313.52/x
  3. Step 3: Cross multiply
    171,989.30x = 257,836.94 × 65,313.52
  4. Step 4: Simplify right side
    171,989.30x = 16,840,238,137.43
  5. Step 5: Solve for x
    x = 16,840,238,137.43/171,989.30
  6. Step 6: Final answer
    x = 97,914.45

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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.