Home / 128,325.09-192,351.55-49,405.17

Finding the Fourth Proportional to 128,325.09, 192,351.55 and 49,405.17

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Solution

The fourth proportional to 128,325.09, 192,351.55 and 49,405.17 is: 74,055.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,325.09 : 192,351.55 = 49,405.17 : x
  2. Step 2: Convert to fraction form
    128,325.09/192,351.55 = 49,405.17/x
  3. Step 3: Cross multiply
    128,325.09x = 192,351.55 × 49,405.17
  4. Step 4: Simplify right side
    128,325.09x = 9,503,161,027.51
  5. Step 5: Solve for x
    x = 9,503,161,027.51/128,325.09
  6. Step 6: Final answer
    x = 74,055.36

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1.5x scale

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.