Home / 128,627.82-192,949-39,893.94

Finding the Fourth Proportional to 128,627.82, 192,949 and 39,893.94

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Solution

The fourth proportional to 128,627.82, 192,949 and 39,893.94 is: 59,843.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,627.82 : 192,949 = 39,893.94 : x
  2. Step 2: Convert to fraction form
    128,627.82/192,949 = 39,893.94/x
  3. Step 3: Cross multiply
    128,627.82x = 192,949 × 39,893.94
  4. Step 4: Simplify right side
    128,627.82x = 7,697,495,829.06
  5. Step 5: Solve for x
    x = 7,697,495,829.06/128,627.82
  6. Step 6: Final answer
    x = 59,843.16

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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.