Home / 136,729.56-188,686.44-76,296.60

Finding the Fourth Proportional to 136,729.56, 188,686.44 and 76,296.60

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Solution

The fourth proportional to 136,729.56, 188,686.44 and 76,296.60 is: 105,289.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,729.56 : 188,686.44 = 76,296.60 : x
  2. Step 2: Convert to fraction form
    136,729.56/188,686.44 = 76,296.60/x
  3. Step 3: Cross multiply
    136,729.56x = 188,686.44 × 76,296.60
  4. Step 4: Simplify right side
    136,729.56x = 14,396,133,838.10
  5. Step 5: Solve for x
    x = 14,396,133,838.10/136,729.56
  6. Step 6: Final answer
    x = 105,289.11

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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.