Home / 135,629.20-187,179.28-75,218.72

Finding the Fourth Proportional to 135,629.20, 187,179.28 and 75,218.72

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Solution

The fourth proportional to 135,629.20, 187,179.28 and 75,218.72 is: 103,807.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,629.20 : 187,179.28 = 75,218.72 : x
  2. Step 2: Convert to fraction form
    135,629.20/187,179.28 = 75,218.72/x
  3. Step 3: Cross multiply
    135,629.20x = 187,179.28 × 75,218.72
  4. Step 4: Simplify right side
    135,629.20x = 14,079,385,852.12
  5. Step 5: Solve for x
    x = 14,079,385,852.12/135,629.20
  6. Step 6: Final answer
    x = 103,807.93

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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.