Home / 139,485.12-192,475.08-82,885.56

Finding the Fourth Proportional to 139,485.12, 192,475.08 and 82,885.56

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Solution

The fourth proportional to 139,485.12, 192,475.08 and 82,885.56 is: 114,373.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,485.12 : 192,475.08 = 82,885.56 : x
  2. Step 2: Convert to fraction form
    139,485.12/192,475.08 = 82,885.56/x
  3. Step 3: Cross multiply
    139,485.12x = 192,475.08 × 82,885.56
  4. Step 4: Simplify right side
    139,485.12x = 15,953,404,791.84
  5. Step 5: Solve for x
    x = 15,953,404,791.84/139,485.12
  6. Step 6: Final answer
    x = 114,373.52

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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.