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Finding the Fourth Proportional to 139,041.09, 206,772.75 and 134,612.37

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Solution

The fourth proportional to 139,041.09, 206,772.75 and 134,612.37 is: 200,186.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,041.09 : 206,772.75 = 134,612.37 : x
  2. Step 2: Convert to fraction form
    139,041.09/206,772.75 = 134,612.37/x
  3. Step 3: Cross multiply
    139,041.09x = 206,772.75 × 134,612.37
  4. Step 4: Simplify right side
    139,041.09x = 27,834,169,928.92
  5. Step 5: Solve for x
    x = 27,834,169,928.92/139,041.09
  6. Step 6: Final answer
    x = 200,186.65

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.