Home / 128,581.36-192,881.28-44,340.30

Finding the Fourth Proportional to 128,581.36, 192,881.28 and 44,340.30

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Solution

The fourth proportional to 128,581.36, 192,881.28 and 44,340.30 is: 66,513.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,581.36 : 192,881.28 = 44,340.30 : x
  2. Step 2: Convert to fraction form
    128,581.36/192,881.28 = 44,340.30/x
  3. Step 3: Cross multiply
    128,581.36x = 192,881.28 × 44,340.30
  4. Step 4: Simplify right side
    128,581.36x = 8,552,413,736.45
  5. Step 5: Solve for x
    x = 8,552,413,736.45/128,581.36
  6. Step 6: Final answer
    x = 66,513.64

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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.