Home / 130,286.75-179,780.54-72,929.25

Finding the Fourth Proportional to 130,286.75, 179,780.54 and 72,929.25

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Solution

The fourth proportional to 130,286.75, 179,780.54 and 72,929.25 is: 100,633.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,286.75 : 179,780.54 = 72,929.25 : x
  2. Step 2: Convert to fraction form
    130,286.75/179,780.54 = 72,929.25/x
  3. Step 3: Cross multiply
    130,286.75x = 179,780.54 × 72,929.25
  4. Step 4: Simplify right side
    130,286.75x = 13,111,259,582.15
  5. Step 5: Solve for x
    x = 13,111,259,582.15/130,286.75
  6. Step 6: Final answer
    x = 100,633.87

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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.