Home / 129,719.43-179,021.04-73,134.45

Finding the Fourth Proportional to 129,719.43, 179,021.04 and 73,134.45

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Solution

The fourth proportional to 129,719.43, 179,021.04 and 73,134.45 is: 100,930.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,719.43 : 179,021.04 = 73,134.45 : x
  2. Step 2: Convert to fraction form
    129,719.43/179,021.04 = 73,134.45/x
  3. Step 3: Cross multiply
    129,719.43x = 179,021.04 × 73,134.45
  4. Step 4: Simplify right side
    129,719.43x = 13,092,605,298.83
  5. Step 5: Solve for x
    x = 13,092,605,298.83/129,719.43
  6. Step 6: Final answer
    x = 100,930.18

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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.