Home / 131,701.20-198,012.60-128,936.40

Finding the Fourth Proportional to 131,701.20, 198,012.60 and 128,936.40

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Solution

The fourth proportional to 131,701.20, 198,012.60 and 128,936.40 is: 193,855.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,701.20 : 198,012.60 = 128,936.40 : x
  2. Step 2: Convert to fraction form
    131,701.20/198,012.60 = 128,936.40/x
  3. Step 3: Cross multiply
    131,701.20x = 198,012.60 × 128,936.40
  4. Step 4: Simplify right side
    131,701.20x = 25,531,031,798.64
  5. Step 5: Solve for x
    x = 25,531,031,798.64/131,701.20
  6. Step 6: Final answer
    x = 193,855.73

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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.