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Finding the Fourth Proportional to 171,607.60, 257,433.27 and 66,412.90

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Solution

The fourth proportional to 171,607.60, 257,433.27 and 66,412.90 is: 99,627.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,607.60 : 257,433.27 = 66,412.90 : x
  2. Step 2: Convert to fraction form
    171,607.60/257,433.27 = 66,412.90/x
  3. Step 3: Cross multiply
    171,607.60x = 257,433.27 × 66,412.90
  4. Step 4: Simplify right side
    171,607.60x = 17,096,890,017.18
  5. Step 5: Solve for x
    x = 17,096,890,017.18/171,607.60
  6. Step 6: Final answer
    x = 99,627.81

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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.