Home / 130,678.80-196,083.06-51,791.28

Finding the Fourth Proportional to 130,678.80, 196,083.06 and 51,791.28

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Solution

The fourth proportional to 130,678.80, 196,083.06 and 51,791.28 is: 77,712.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,678.80 : 196,083.06 = 51,791.28 : x
  2. Step 2: Convert to fraction form
    130,678.80/196,083.06 = 51,791.28/x
  3. Step 3: Cross multiply
    130,678.80x = 196,083.06 × 51,791.28
  4. Step 4: Simplify right side
    130,678.80x = 10,155,392,663.72
  5. Step 5: Solve for x
    x = 10,155,392,663.72/130,678.80
  6. Step 6: Final answer
    x = 77,712.63

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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.