Home / 129,369.48-178,556.43-75,667.69

Finding the Fourth Proportional to 129,369.48, 178,556.43 and 75,667.69

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Solution

The fourth proportional to 129,369.48, 178,556.43 and 75,667.69 is: 104,436.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,369.48 : 178,556.43 = 75,667.69 : x
  2. Step 2: Convert to fraction form
    129,369.48/178,556.43 = 75,667.69/x
  3. Step 3: Cross multiply
    129,369.48x = 178,556.43 × 75,667.69
  4. Step 4: Simplify right side
    129,369.48x = 13,510,952,592.75
  5. Step 5: Solve for x
    x = 13,510,952,592.75/129,369.48
  6. Step 6: Final answer
    x = 104,436.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.