Home / 139,370.45-192,331.71-82,011.98

Finding the Fourth Proportional to 139,370.45, 192,331.71 and 82,011.98

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Solution

The fourth proportional to 139,370.45, 192,331.71 and 82,011.98 is: 113,176.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,370.45 : 192,331.71 = 82,011.98 : x
  2. Step 2: Convert to fraction form
    139,370.45/192,331.71 = 82,011.98/x
  3. Step 3: Cross multiply
    139,370.45x = 192,331.71 × 82,011.98
  4. Step 4: Simplify right side
    139,370.45x = 15,773,503,392.23
  5. Step 5: Solve for x
    x = 15,773,503,392.23/139,370.45
  6. Step 6: Final answer
    x = 113,176.82

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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.