Home / 140,021.81-193,222.50-79,584.06

Finding the Fourth Proportional to 140,021.81, 193,222.50 and 79,584.06

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Solution

The fourth proportional to 140,021.81, 193,222.50 and 79,584.06 is: 109,821.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,021.81 : 193,222.50 = 79,584.06 : x
  2. Step 2: Convert to fraction form
    140,021.81/193,222.50 = 79,584.06/x
  3. Step 3: Cross multiply
    140,021.81x = 193,222.50 × 79,584.06
  4. Step 4: Simplify right side
    140,021.81x = 15,377,431,459.49
  5. Step 5: Solve for x
    x = 15,377,431,459.49/140,021.81
  6. Step 6: Final answer
    x = 109,821.69

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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.