Home / 128,780.01-193,169.07-40,033.35

Finding the Fourth Proportional to 128,780.01, 193,169.07 and 40,033.35

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Solution

The fourth proportional to 128,780.01, 193,169.07 and 40,033.35 is: 60,049.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,780.01 : 193,169.07 = 40,033.35 : x
  2. Step 2: Convert to fraction form
    128,780.01/193,169.07 = 40,033.35/x
  3. Step 3: Cross multiply
    128,780.01x = 193,169.07 × 40,033.35
  4. Step 4: Simplify right side
    128,780.01x = 7,733,204,988.48
  5. Step 5: Solve for x
    x = 7,733,204,988.48/128,780.01
  6. Step 6: Final answer
    x = 60,049.73

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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.