Home / 139,548.09-192,570.55-79,122.82

Finding the Fourth Proportional to 139,548.09, 192,570.55 and 79,122.82

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Solution

The fourth proportional to 139,548.09, 192,570.55 and 79,122.82 is: 109,186.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,548.09 : 192,570.55 = 79,122.82 : x
  2. Step 2: Convert to fraction form
    139,548.09/192,570.55 = 79,122.82/x
  3. Step 3: Cross multiply
    139,548.09x = 192,570.55 × 79,122.82
  4. Step 4: Simplify right side
    139,548.09x = 15,236,724,964.95
  5. Step 5: Solve for x
    x = 15,236,724,964.95/139,548.09
  6. Step 6: Final answer
    x = 109,186.19

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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.