Home / 120,409.15-166,165.83-72,653.29

Finding the Fourth Proportional to 120,409.15, 166,165.83 and 72,653.29

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Solution

The fourth proportional to 120,409.15, 166,165.83 and 72,653.29 is: 100,262.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,409.15 : 166,165.83 = 72,653.29 : x
  2. Step 2: Convert to fraction form
    120,409.15/166,165.83 = 72,653.29/x
  3. Step 3: Cross multiply
    120,409.15x = 166,165.83 × 72,653.29
  4. Step 4: Simplify right side
    120,409.15x = 12,072,494,235.08
  5. Step 5: Solve for x
    x = 12,072,494,235.08/120,409.15
  6. Step 6: Final answer
    x = 100,262.27

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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.