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Finding the Fourth Proportional to 139,239.92, 192,151.30 and 75,577.76

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Solution

The fourth proportional to 139,239.92, 192,151.30 and 75,577.76 is: 104,297.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,239.92 : 192,151.30 = 75,577.76 : x
  2. Step 2: Convert to fraction form
    139,239.92/192,151.30 = 75,577.76/x
  3. Step 3: Cross multiply
    139,239.92x = 192,151.30 × 75,577.76
  4. Step 4: Simplify right side
    139,239.92x = 14,522,364,835.09
  5. Step 5: Solve for x
    x = 14,522,364,835.09/139,239.92
  6. Step 6: Final answer
    x = 104,297.42

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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.