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Finding the Fourth Proportional to 171,621.90, 257,432.85 and 97,893.90

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Solution

The fourth proportional to 171,621.90, 257,432.85 and 97,893.90 is: 146,840.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,621.90 : 257,432.85 = 97,893.90 : x
  2. Step 2: Convert to fraction form
    171,621.90/257,432.85 = 97,893.90/x
  3. Step 3: Cross multiply
    171,621.90x = 257,432.85 × 97,893.90
  4. Step 4: Simplify right side
    171,621.90x = 25,201,105,674.62
  5. Step 5: Solve for x
    x = 25,201,105,674.62/171,621.90
  6. Step 6: Final answer
    x = 146,840.85

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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.