Home / 128,942.24-177,935.64-71,584.04

Finding the Fourth Proportional to 128,942.24, 177,935.64 and 71,584.04

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Solution

The fourth proportional to 128,942.24, 177,935.64 and 71,584.04 is: 98,783.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,942.24 : 177,935.64 = 71,584.04 : x
  2. Step 2: Convert to fraction form
    128,942.24/177,935.64 = 71,584.04/x
  3. Step 3: Cross multiply
    128,942.24x = 177,935.64 × 71,584.04
  4. Step 4: Simplify right side
    128,942.24x = 12,737,351,971.19
  5. Step 5: Solve for x
    x = 12,737,351,971.19/128,942.24
  6. Step 6: Final answer
    x = 98,783.39

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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.