Home / 140,093.40-193,318.86-76,429.80

Finding the Fourth Proportional to 140,093.40, 193,318.86 and 76,429.80

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Solution

The fourth proportional to 140,093.40, 193,318.86 and 76,429.80 is: 105,467.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,093.40 : 193,318.86 = 76,429.80 : x
  2. Step 2: Convert to fraction form
    140,093.40/193,318.86 = 76,429.80/x
  3. Step 3: Cross multiply
    140,093.40x = 193,318.86 × 76,429.80
  4. Step 4: Simplify right side
    140,093.40x = 14,775,321,806.03
  5. Step 5: Solve for x
    x = 14,775,321,806.03/140,093.40
  6. Step 6: Final answer
    x = 105,467.65

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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.