Home / 140,123.43-193,375.80-79,699.59

Finding the Fourth Proportional to 140,123.43, 193,375.80 and 79,699.59

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Solution

The fourth proportional to 140,123.43, 193,375.80 and 79,699.59 is: 109,988.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,123.43 : 193,375.80 = 79,699.59 : x
  2. Step 2: Convert to fraction form
    140,123.43/193,375.80 = 79,699.59/x
  3. Step 3: Cross multiply
    140,123.43x = 193,375.80 × 79,699.59
  4. Step 4: Simplify right side
    140,123.43x = 15,411,971,975.92
  5. Step 5: Solve for x
    x = 15,411,971,975.92/140,123.43
  6. Step 6: Final answer
    x = 109,988.54

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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.