Home / 136,766.17-188,737.58-76,336.80

Finding the Fourth Proportional to 136,766.17, 188,737.58 and 76,336.80

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Solution

The fourth proportional to 136,766.17, 188,737.58 and 76,336.80 is: 105,344.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,766.17 : 188,737.58 = 76,336.80 : x
  2. Step 2: Convert to fraction form
    136,766.17/188,737.58 = 76,336.80/x
  3. Step 3: Cross multiply
    136,766.17x = 188,737.58 × 76,336.80
  4. Step 4: Simplify right side
    136,766.17x = 14,407,622,896.94
  5. Step 5: Solve for x
    x = 14,407,622,896.94/136,766.17
  6. Step 6: Final answer
    x = 105,344.93

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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.