Home / 136,933.90-188,965.30-76,505.00

Finding the Fourth Proportional to 136,933.90, 188,965.30 and 76,505.00

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Solution

The fourth proportional to 136,933.90, 188,965.30 and 76,505.00 is: 105,574.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,933.90 : 188,965.30 = 76,505.00 : x
  2. Step 2: Convert to fraction form
    136,933.90/188,965.30 = 76,505.00/x
  3. Step 3: Cross multiply
    136,933.90x = 188,965.30 × 76,505.00
  4. Step 4: Simplify right side
    136,933.90x = 14,456,790,131.62
  5. Step 5: Solve for x
    x = 14,456,790,131.62/136,933.90
  6. Step 6: Final answer
    x = 105,574.95

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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.