Home / 135,890.82-187,541.37-79,320.42

Finding the Fourth Proportional to 135,890.82, 187,541.37 and 79,320.42

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Solution

The fourth proportional to 135,890.82, 187,541.37 and 79,320.42 is: 109,469.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,890.82 : 187,541.37 = 79,320.42 : x
  2. Step 2: Convert to fraction form
    135,890.82/187,541.37 = 79,320.42/x
  3. Step 3: Cross multiply
    135,890.82x = 187,541.37 × 79,320.42
  4. Step 4: Simplify right side
    135,890.82x = 14,875,860,235.78
  5. Step 5: Solve for x
    x = 14,875,860,235.78/135,890.82
  6. Step 6: Final answer
    x = 109,469.21

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1.5x scale

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.