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Finding the Fourth Proportional to 114,181.20, 171,271.80 and 80,938.80

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Solution

The fourth proportional to 114,181.20, 171,271.80 and 80,938.80 is: 121,408.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,181.20 : 171,271.80 = 80,938.80 : x
  2. Step 2: Convert to fraction form
    114,181.20/171,271.80 = 80,938.80/x
  3. Step 3: Cross multiply
    114,181.20x = 171,271.80 × 80,938.80
  4. Step 4: Simplify right side
    114,181.20x = 13,862,533,965.84
  5. Step 5: Solve for x
    x = 13,862,533,965.84/114,181.20
  6. Step 6: Final answer
    x = 121,408.20

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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.