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Finding the Fourth Proportional to 171,383.16, 257,148.16 and 66,275.94

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Solution

The fourth proportional to 171,383.16, 257,148.16 and 66,275.94 is: 99,442.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,383.16 : 257,148.16 = 66,275.94 : x
  2. Step 2: Convert to fraction form
    171,383.16/257,148.16 = 66,275.94/x
  3. Step 3: Cross multiply
    171,383.16x = 257,148.16 × 66,275.94
  4. Step 4: Simplify right side
    171,383.16x = 17,042,736,023.27
  5. Step 5: Solve for x
    x = 17,042,736,023.27/171,383.16
  6. Step 6: Final answer
    x = 99,442.30

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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.