Home / 128,899.89-193,349.85-40,160.55

Finding the Fourth Proportional to 128,899.89, 193,349.85 and 40,160.55

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Solution

The fourth proportional to 128,899.89, 193,349.85 and 40,160.55 is: 60,240.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,899.89 : 193,349.85 = 40,160.55 : x
  2. Step 2: Convert to fraction form
    128,899.89/193,349.85 = 40,160.55/x
  3. Step 3: Cross multiply
    128,899.89x = 193,349.85 × 40,160.55
  4. Step 4: Simplify right side
    128,899.89x = 7,765,036,318.42
  5. Step 5: Solve for x
    x = 7,765,036,318.42/128,899.89
  6. Step 6: Final answer
    x = 60,240.83

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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.