Home / 139,403.19-192,375.90-75,740.43

Finding the Fourth Proportional to 139,403.19, 192,375.90 and 75,740.43

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Solution

The fourth proportional to 139,403.19, 192,375.90 and 75,740.43 is: 104,521.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,403.19 : 192,375.90 = 75,740.43 : x
  2. Step 2: Convert to fraction form
    139,403.19/192,375.90 = 75,740.43/x
  3. Step 3: Cross multiply
    139,403.19x = 192,375.90 × 75,740.43
  4. Step 4: Simplify right side
    139,403.19x = 14,570,633,387.64
  5. Step 5: Solve for x
    x = 14,570,633,387.64/139,403.19
  6. Step 6: Final answer
    x = 104,521.52

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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.