Home / 136,949.27-188,986.44-76,520.40

Finding the Fourth Proportional to 136,949.27, 188,986.44 and 76,520.40

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Solution

The fourth proportional to 136,949.27, 188,986.44 and 76,520.40 is: 105,596.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,949.27 : 188,986.44 = 76,520.40 : x
  2. Step 2: Convert to fraction form
    136,949.27/188,986.44 = 76,520.40/x
  3. Step 3: Cross multiply
    136,949.27x = 188,986.44 × 76,520.40
  4. Step 4: Simplify right side
    136,949.27x = 14,461,317,983.38
  5. Step 5: Solve for x
    x = 14,461,317,983.38/136,949.27
  6. Step 6: Final answer
    x = 105,596.17

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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.