Home / 128,434.47-192,707.09-49,604.06

Finding the Fourth Proportional to 128,434.47, 192,707.09 and 49,604.06

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Solution

The fourth proportional to 128,434.47, 192,707.09 and 49,604.06 is: 74,427.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,434.47 : 192,707.09 = 49,604.06 : x
  2. Step 2: Convert to fraction form
    128,434.47/192,707.09 = 49,604.06/x
  3. Step 3: Cross multiply
    128,434.47x = 192,707.09 × 49,604.06
  4. Step 4: Simplify right side
    128,434.47x = 9,559,054,054.79
  5. Step 5: Solve for x
    x = 9,559,054,054.79/128,434.47
  6. Step 6: Final answer
    x = 74,427.48

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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.