Home / 137,289.72-189,450.90-76,859.86

Finding the Fourth Proportional to 137,289.72, 189,450.90 and 76,859.86

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Solution

The fourth proportional to 137,289.72, 189,450.90 and 76,859.86 is: 106,061.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,289.72 : 189,450.90 = 76,859.86 : x
  2. Step 2: Convert to fraction form
    137,289.72/189,450.90 = 76,859.86/x
  3. Step 3: Cross multiply
    137,289.72x = 189,450.90 × 76,859.86
  4. Step 4: Simplify right side
    137,289.72x = 14,561,169,650.87
  5. Step 5: Solve for x
    x = 14,561,169,650.87/137,289.72
  6. Step 6: Final answer
    x = 106,061.62

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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.