Home / 128,986.07-193,404.38-50,007.83

Finding the Fourth Proportional to 128,986.07, 193,404.38 and 50,007.83

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Solution

The fourth proportional to 128,986.07, 193,404.38 and 50,007.83 is: 74,982.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,986.07 : 193,404.38 = 50,007.83 : x
  2. Step 2: Convert to fraction form
    128,986.07/193,404.38 = 50,007.83/x
  3. Step 3: Cross multiply
    128,986.07x = 193,404.38 × 50,007.83
  4. Step 4: Simplify right side
    128,986.07x = 9,671,732,139.23
  5. Step 5: Solve for x
    x = 9,671,732,139.23/128,986.07
  6. Step 6: Final answer
    x = 74,982.77

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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.