Home / 136,818.11-188,866.59-83,120.28

Finding the Fourth Proportional to 136,818.11, 188,866.59 and 83,120.28

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Solution

The fourth proportional to 136,818.11, 188,866.59 and 83,120.28 is: 114,740.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,818.11 : 188,866.59 = 83,120.28 : x
  2. Step 2: Convert to fraction form
    136,818.11/188,866.59 = 83,120.28/x
  3. Step 3: Cross multiply
    136,818.11x = 188,866.59 × 83,120.28
  4. Step 4: Simplify right side
    136,818.11x = 15,698,642,823.49
  5. Step 5: Solve for x
    x = 15,698,642,823.49/136,818.11
  6. Step 6: Final answer
    x = 114,740.97

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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.