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Finding the Fourth Proportional to 137,886, 206,732.52 and 70,438.92

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Solution

The fourth proportional to 137,886, 206,732.52 and 70,438.92 is: 105,609.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,886 : 206,732.52 = 70,438.92 : x
  2. Step 2: Convert to fraction form
    137,886/206,732.52 = 70,438.92/x
  3. Step 3: Cross multiply
    137,886x = 206,732.52 × 70,438.92
  4. Step 4: Simplify right side
    137,886x = 14,562,015,437.68
  5. Step 5: Solve for x
    x = 14,562,015,437.68/137,886
  6. Step 6: Final answer
    x = 105,609.09

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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.