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Finding the Fourth Proportional to 171,468.80, 257,203.20 and 53,139.20

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Solution

The fourth proportional to 171,468.80, 257,203.20 and 53,139.20 is: 79,708.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,468.80 : 257,203.20 = 53,139.20 : x
  2. Step 2: Convert to fraction form
    171,468.80/257,203.20 = 53,139.20/x
  3. Step 3: Cross multiply
    171,468.80x = 257,203.20 × 53,139.20
  4. Step 4: Simplify right side
    171,468.80x = 13,667,572,285.44
  5. Step 5: Solve for x
    x = 13,667,572,285.44/171,468.80
  6. Step 6: Final answer
    x = 79,708.80

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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.