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Finding the Fourth Proportional to 171,856.65, 257,813.53 and 72,024.35

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Solution

The fourth proportional to 171,856.65, 257,813.53 and 72,024.35 is: 108,048.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,856.65 : 257,813.53 = 72,024.35 : x
  2. Step 2: Convert to fraction form
    171,856.65/257,813.53 = 72,024.35/x
  3. Step 3: Cross multiply
    171,856.65x = 257,813.53 × 72,024.35
  4. Step 4: Simplify right side
    171,856.65x = 18,568,851,559.33
  5. Step 5: Solve for x
    x = 18,568,851,559.33/171,856.65
  6. Step 6: Final answer
    x = 108,048.49

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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.