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Finding the Fourth Proportional to 180,904.40, 271,279.80 and 87,438.80

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Solution

The fourth proportional to 180,904.40, 271,279.80 and 87,438.80 is: 131,121.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,904.40 : 271,279.80 = 87,438.80 : x
  2. Step 2: Convert to fraction form
    180,904.40/271,279.80 = 87,438.80/x
  3. Step 3: Cross multiply
    180,904.40x = 271,279.80 × 87,438.80
  4. Step 4: Simplify right side
    180,904.40x = 23,720,380,176.24
  5. Step 5: Solve for x
    x = 23,720,380,176.24/180,904.40
  6. Step 6: Final answer
    x = 131,121.08

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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.