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Finding the Fourth Proportional to 171,878.94, 257,920.47 and 92,991.42

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Solution

The fourth proportional to 171,878.94, 257,920.47 and 92,991.42 is: 139,542.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,878.94 : 257,920.47 = 92,991.42 : x
  2. Step 2: Convert to fraction form
    171,878.94/257,920.47 = 92,991.42/x
  3. Step 3: Cross multiply
    171,878.94x = 257,920.47 × 92,991.42
  4. Step 4: Simplify right side
    171,878.94x = 23,984,390,752.37
  5. Step 5: Solve for x
    x = 23,984,390,752.37/171,878.94
  6. Step 6: Final answer
    x = 139,542.35

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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.