Home / 128,820.40-193,222.50-40,067.08

Finding the Fourth Proportional to 128,820.40, 193,222.50 and 40,067.08

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Solution

The fourth proportional to 128,820.40, 193,222.50 and 40,067.08 is: 60,098.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,820.40 : 193,222.50 = 40,067.08 : x
  2. Step 2: Convert to fraction form
    128,820.40/193,222.50 = 40,067.08/x
  3. Step 3: Cross multiply
    128,820.40x = 193,222.50 × 40,067.08
  4. Step 4: Simplify right side
    128,820.40x = 7,741,861,365.30
  5. Step 5: Solve for x
    x = 7,741,861,365.30/128,820.40
  6. Step 6: Final answer
    x = 60,098.10

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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.