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Finding the Fourth Proportional to 171,935.40, 257,903.10 and 72,062.40

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Solution

The fourth proportional to 171,935.40, 257,903.10 and 72,062.40 is: 108,093.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,935.40 : 257,903.10 = 72,062.40 : x
  2. Step 2: Convert to fraction form
    171,935.40/257,903.10 = 72,062.40/x
  3. Step 3: Cross multiply
    171,935.40x = 257,903.10 × 72,062.40
  4. Step 4: Simplify right side
    171,935.40x = 18,585,116,353.44
  5. Step 5: Solve for x
    x = 18,585,116,353.44/171,935.40
  6. Step 6: Final answer
    x = 108,093.60

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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.