Home / 139,312.28-192,300-82,723.26

Finding the Fourth Proportional to 139,312.28, 192,300 and 82,723.26

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Solution

The fourth proportional to 139,312.28, 192,300 and 82,723.26 is: 114,187.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,312.28 : 192,300 = 82,723.26 : x
  2. Step 2: Convert to fraction form
    139,312.28/192,300 = 82,723.26/x
  3. Step 3: Cross multiply
    139,312.28x = 192,300 × 82,723.26
  4. Step 4: Simplify right side
    139,312.28x = 15,907,682,898.00
  5. Step 5: Solve for x
    x = 15,907,682,898.00/139,312.28
  6. Step 6: Final answer
    x = 114,187.23

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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.