Home / 198,675.60-298,013.40-127,816.80

Finding the Fourth Proportional to 198,675.60, 298,013.40 and 127,816.80

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Solution

The fourth proportional to 198,675.60, 298,013.40 and 127,816.80 is: 191,725.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,675.60 : 298,013.40 = 127,816.80 : x
  2. Step 2: Convert to fraction form
    198,675.60/298,013.40 = 127,816.80/x
  3. Step 3: Cross multiply
    198,675.60x = 298,013.40 × 127,816.80
  4. Step 4: Simplify right side
    198,675.60x = 38,091,119,145.12
  5. Step 5: Solve for x
    x = 38,091,119,145.12/198,675.60
  6. Step 6: Final answer
    x = 191,725.20

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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.