Home / 130,032.76-179,442.66-72,672.61

Finding the Fourth Proportional to 130,032.76, 179,442.66 and 72,672.61

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Solution

The fourth proportional to 130,032.76, 179,442.66 and 72,672.61 is: 100,286.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,032.76 : 179,442.66 = 72,672.61 : x
  2. Step 2: Convert to fraction form
    130,032.76/179,442.66 = 72,672.61/x
  3. Step 3: Cross multiply
    130,032.76x = 179,442.66 × 72,672.61
  4. Step 4: Simplify right side
    130,032.76x = 13,040,566,447.54
  5. Step 5: Solve for x
    x = 13,040,566,447.54/130,032.76
  6. Step 6: Final answer
    x = 100,286.78

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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.