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Finding the Fourth Proportional to 139,236.68, 192,303.23 and 94,101.05

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Solution

The fourth proportional to 139,236.68, 192,303.23 and 94,101.05 is: 129,965.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,236.68 : 192,303.23 = 94,101.05 : x
  2. Step 2: Convert to fraction form
    139,236.68/192,303.23 = 94,101.05/x
  3. Step 3: Cross multiply
    139,236.68x = 192,303.23 × 94,101.05
  4. Step 4: Simplify right side
    139,236.68x = 18,095,934,429.37
  5. Step 5: Solve for x
    x = 18,095,934,429.37/139,236.68
  6. Step 6: Final answer
    x = 129,965.29

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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.