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Finding the Fourth Proportional to 171,895.48, 257,675.56 and 72,085.68

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Solution

The fourth proportional to 171,895.48, 257,675.56 and 72,085.68 is: 108,058.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,895.48 : 257,675.56 = 72,085.68 : x
  2. Step 2: Convert to fraction form
    171,895.48/257,675.56 = 72,085.68/x
  3. Step 3: Cross multiply
    171,895.48x = 257,675.56 × 72,085.68
  4. Step 4: Simplify right side
    171,895.48x = 18,574,717,961.98
  5. Step 5: Solve for x
    x = 18,574,717,961.98/171,895.48
  6. Step 6: Final answer
    x = 108,058.21

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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.