Home / 140,128.03-193,380.78-76,469.93

Finding the Fourth Proportional to 140,128.03, 193,380.78 and 76,469.93

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Solution

The fourth proportional to 140,128.03, 193,380.78 and 76,469.93 is: 105,530.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,128.03 : 193,380.78 = 76,469.93 : x
  2. Step 2: Convert to fraction form
    140,128.03/193,380.78 = 76,469.93/x
  3. Step 3: Cross multiply
    140,128.03x = 193,380.78 × 76,469.93
  4. Step 4: Simplify right side
    140,128.03x = 14,787,814,754.98
  5. Step 5: Solve for x
    x = 14,787,814,754.98/140,128.03
  6. Step 6: Final answer
    x = 105,530.74

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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.