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Finding the Fourth Proportional to 178,779.60, 268,169.40 and 131,540.40

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Solution

The fourth proportional to 178,779.60, 268,169.40 and 131,540.40 is: 197,310.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,779.60 : 268,169.40 = 131,540.40 : x
  2. Step 2: Convert to fraction form
    178,779.60/268,169.40 = 131,540.40/x
  3. Step 3: Cross multiply
    178,779.60x = 268,169.40 × 131,540.40
  4. Step 4: Simplify right side
    178,779.60x = 35,275,110,143.76
  5. Step 5: Solve for x
    x = 35,275,110,143.76/178,779.60
  6. Step 6: Final answer
    x = 197,310.60

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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.