Home / 198,667.60-298,001.40-131,891.20

Finding the Fourth Proportional to 198,667.60, 298,001.40 and 131,891.20

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Solution

The fourth proportional to 198,667.60, 298,001.40 and 131,891.20 is: 197,836.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,667.60 : 298,001.40 = 131,891.20 : x
  2. Step 2: Convert to fraction form
    198,667.60/298,001.40 = 131,891.20/x
  3. Step 3: Cross multiply
    198,667.60x = 298,001.40 × 131,891.20
  4. Step 4: Simplify right side
    198,667.60x = 39,303,762,247.68
  5. Step 5: Solve for x
    x = 39,303,762,247.68/198,667.60
  6. Step 6: Final answer
    x = 197,836.80

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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.