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Finding the Fourth Proportional to 171,783.47, 257,775.68 and 71,935.31

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Solution

The fourth proportional to 171,783.47, 257,775.68 and 71,935.31 is: 107,945.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,783.47 : 257,775.68 = 71,935.31 : x
  2. Step 2: Convert to fraction form
    171,783.47/257,775.68 = 71,935.31/x
  3. Step 3: Cross multiply
    171,783.47x = 257,775.68 × 71,935.31
  4. Step 4: Simplify right side
    171,783.47x = 18,543,174,275.54
  5. Step 5: Solve for x
    x = 18,543,174,275.54/171,783.47
  6. Step 6: Final answer
    x = 107,945.04

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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.