Home / 130,421.82-179,969.66-103,629.18

Finding the Fourth Proportional to 130,421.82, 179,969.66 and 103,629.18

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Solution

The fourth proportional to 130,421.82, 179,969.66 and 103,629.18 is: 142,998.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,421.82 : 179,969.66 = 103,629.18 : x
  2. Step 2: Convert to fraction form
    130,421.82/179,969.66 = 103,629.18/x
  3. Step 3: Cross multiply
    130,421.82x = 179,969.66 × 103,629.18
  4. Step 4: Simplify right side
    130,421.82x = 18,650,108,290.68
  5. Step 5: Solve for x
    x = 18,650,108,290.68/130,421.82
  6. Step 6: Final answer
    x = 142,998.37

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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.