Home / 140,420.08-193,779-76,761.52

Finding the Fourth Proportional to 140,420.08, 193,779 and 76,761.52

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Solution

The fourth proportional to 140,420.08, 193,779 and 76,761.52 is: 105,930.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,420.08 : 193,779 = 76,761.52 : x
  2. Step 2: Convert to fraction form
    140,420.08/193,779 = 76,761.52/x
  3. Step 3: Cross multiply
    140,420.08x = 193,779 × 76,761.52
  4. Step 4: Simplify right side
    140,420.08x = 14,874,770,584.08
  5. Step 5: Solve for x
    x = 14,874,770,584.08/140,420.08
  6. Step 6: Final answer
    x = 105,930.51

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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.