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Finding the Fourth Proportional to 171,742.08, 257,770.28 and 87,562.60

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Solution

The fourth proportional to 171,742.08, 257,770.28 and 87,562.60 is: 131,424.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,742.08 : 257,770.28 = 87,562.60 : x
  2. Step 2: Convert to fraction form
    171,742.08/257,770.28 = 87,562.60/x
  3. Step 3: Cross multiply
    171,742.08x = 257,770.28 × 87,562.60
  4. Step 4: Simplify right side
    171,742.08x = 22,571,035,919.53
  5. Step 5: Solve for x
    x = 22,571,035,919.53/171,742.08
  6. Step 6: Final answer
    x = 131,424.03

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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.