Home / 130,378.31-179,891.23-73,789.68

Finding the Fourth Proportional to 130,378.31, 179,891.23 and 73,789.68

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Solution

The fourth proportional to 130,378.31, 179,891.23 and 73,789.68 is: 101,812.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,378.31 : 179,891.23 = 73,789.68 : x
  2. Step 2: Convert to fraction form
    130,378.31/179,891.23 = 73,789.68/x
  3. Step 3: Cross multiply
    130,378.31x = 179,891.23 × 73,789.68
  4. Step 4: Simplify right side
    130,378.31x = 13,274,116,924.98
  5. Step 5: Solve for x
    x = 13,274,116,924.98/130,378.31
  6. Step 6: Final answer
    x = 101,812.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.