Home / 140,420.79-193,766.99-79,986.69

Finding the Fourth Proportional to 140,420.79, 193,766.99 and 79,986.69

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Solution

The fourth proportional to 140,420.79, 193,766.99 and 79,986.69 is: 110,373.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,420.79 : 193,766.99 = 79,986.69 : x
  2. Step 2: Convert to fraction form
    140,420.79/193,766.99 = 79,986.69/x
  3. Step 3: Cross multiply
    140,420.79x = 193,766.99 × 79,986.69
  4. Step 4: Simplify right side
    140,420.79x = 15,498,779,761.43
  5. Step 5: Solve for x
    x = 15,498,779,761.43/140,420.79
  6. Step 6: Final answer
    x = 110,373.83

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1.5x scale

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.