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Finding the Fourth Proportional to 139,806.84, 209,800.44 and 51,052.92

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Solution

The fourth proportional to 139,806.84, 209,800.44 and 51,052.92 is: 76,612.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,806.84 : 209,800.44 = 51,052.92 : x
  2. Step 2: Convert to fraction form
    139,806.84/209,800.44 = 51,052.92/x
  3. Step 3: Cross multiply
    139,806.84x = 209,800.44 × 51,052.92
  4. Step 4: Simplify right side
    139,806.84x = 10,710,925,079.28
  5. Step 5: Solve for x
    x = 10,710,925,079.28/139,806.84
  6. Step 6: Final answer
    x = 76,612.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.