Home / 128,817.50-193,246.90-40,091.52

Finding the Fourth Proportional to 128,817.50, 193,246.90 and 40,091.52

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Solution

The fourth proportional to 128,817.50, 193,246.90 and 40,091.52 is: 60,143.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,817.50 : 193,246.90 = 40,091.52 : x
  2. Step 2: Convert to fraction form
    128,817.50/193,246.90 = 40,091.52/x
  3. Step 3: Cross multiply
    128,817.50x = 193,246.90 × 40,091.52
  4. Step 4: Simplify right side
    128,817.50x = 7,747,561,956.29
  5. Step 5: Solve for x
    x = 7,747,561,956.29/128,817.50
  6. Step 6: Final answer
    x = 60,143.71

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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.