Home / 128,930,773.60-192,971,007.60-90,667,021.60

Finding the Fourth Proportional to 128,930,773.60, 192,971,007.60 and 90,667,021.60

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Solution

The fourth proportional to 128,930,773.60, 192,971,007.60 and 90,667,021.60 is: 135,701,555.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,930,773.60 : 192,971,007.60 = 90,667,021.60 : x
  2. Step 2: Convert to fraction form
    128,930,773.60/192,971,007.60 = 90,667,021.60/x
  3. Step 3: Cross multiply
    128,930,773.60x = 192,971,007.60 × 90,667,021.60
  4. Step 4: Simplify right side
    128,930,773.60x = 17,496,106,514,242,962
  5. Step 5: Solve for x
    x = 17,496,106,514,242,962/128,930,773.60
  6. Step 6: Final answer
    x = 135,701,555.38

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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.