Home / 147,143.20-220,131.60-127,638.40

Finding the Fourth Proportional to 147,143.20, 220,131.60 and 127,638.40

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Solution

The fourth proportional to 147,143.20, 220,131.60 and 127,638.40 is: 190,951.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,143.20 : 220,131.60 = 127,638.40 : x
  2. Step 2: Convert to fraction form
    147,143.20/220,131.60 = 127,638.40/x
  3. Step 3: Cross multiply
    147,143.20x = 220,131.60 × 127,638.40
  4. Step 4: Simplify right side
    147,143.20x = 28,097,245,213.44
  5. Step 5: Solve for x
    x = 28,097,245,213.44/147,143.20
  6. Step 6: Final answer
    x = 190,951.71

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1.5x scale

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.