Home / 136,619.40-188,534.40-76,190.11

Finding the Fourth Proportional to 136,619.40, 188,534.40 and 76,190.11

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Solution

The fourth proportional to 136,619.40, 188,534.40 and 76,190.11 is: 105,142.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,619.40 : 188,534.40 = 76,190.11 : x
  2. Step 2: Convert to fraction form
    136,619.40/188,534.40 = 76,190.11/x
  3. Step 3: Cross multiply
    136,619.40x = 188,534.40 × 76,190.11
  4. Step 4: Simplify right side
    136,619.40x = 14,364,456,674.78
  5. Step 5: Solve for x
    x = 14,364,456,674.78/136,619.40
  6. Step 6: Final answer
    x = 105,142.15

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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.