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Finding the Fourth Proportional to 139,235.70, 192,145.63 and 75,573.49

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Solution

The fourth proportional to 139,235.70, 192,145.63 and 75,573.49 is: 104,291.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,235.70 : 192,145.63 = 75,573.49 : x
  2. Step 2: Convert to fraction form
    139,235.70/192,145.63 = 75,573.49/x
  3. Step 3: Cross multiply
    139,235.70x = 192,145.63 × 75,573.49
  4. Step 4: Simplify right side
    139,235.70x = 14,521,115,847.35
  5. Step 5: Solve for x
    x = 14,521,115,847.35/139,235.70
  6. Step 6: Final answer
    x = 104,291.61

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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.