Home / 136,551.28-188,425.56-76,117.36

Finding the Fourth Proportional to 136,551.28, 188,425.56 and 76,117.36

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Solution

The fourth proportional to 136,551.28, 188,425.56 and 76,117.36 is: 105,033.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,551.28 : 188,425.56 = 76,117.36 : x
  2. Step 2: Convert to fraction form
    136,551.28/188,425.56 = 76,117.36/x
  3. Step 3: Cross multiply
    136,551.28x = 188,425.56 × 76,117.36
  4. Step 4: Simplify right side
    136,551.28x = 14,342,456,183.72
  5. Step 5: Solve for x
    x = 14,342,456,183.72/136,551.28
  6. Step 6: Final answer
    x = 105,033.48

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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.