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Finding the Fourth Proportional to 171,687.10, 257,569.80 and 53,370.40

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Solution

The fourth proportional to 171,687.10, 257,569.80 and 53,370.40 is: 80,067.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,687.10 : 257,569.80 = 53,370.40 : x
  2. Step 2: Convert to fraction form
    171,687.10/257,569.80 = 53,370.40/x
  3. Step 3: Cross multiply
    171,687.10x = 257,569.80 × 53,370.40
  4. Step 4: Simplify right side
    171,687.10x = 13,746,603,253.92
  5. Step 5: Solve for x
    x = 13,746,603,253.92/171,687.10
  6. Step 6: Final answer
    x = 80,067.77

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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.