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Finding the Fourth Proportional to 139,228.67, 192,135.75 and 75,566.48

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Solution

The fourth proportional to 139,228.67, 192,135.75 and 75,566.48 is: 104,281.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,228.67 : 192,135.75 = 75,566.48 : x
  2. Step 2: Convert to fraction form
    139,228.67/192,135.75 = 75,566.48/x
  3. Step 3: Cross multiply
    139,228.67x = 192,135.75 × 75,566.48
  4. Step 4: Simplify right side
    139,228.67x = 14,519,021,348.98
  5. Step 5: Solve for x
    x = 14,519,021,348.98/139,228.67
  6. Step 6: Final answer
    x = 104,281.84

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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.