Home / 136,764.28-188,729.64-85,804.42

Finding the Fourth Proportional to 136,764.28, 188,729.64 and 85,804.42

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Solution

The fourth proportional to 136,764.28, 188,729.64 and 85,804.42 is: 118,406.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,764.28 : 188,729.64 = 85,804.42 : x
  2. Step 2: Convert to fraction form
    136,764.28/188,729.64 = 85,804.42/x
  3. Step 3: Cross multiply
    136,764.28x = 188,729.64 × 85,804.42
  4. Step 4: Simplify right side
    136,764.28x = 16,193,837,297.01
  5. Step 5: Solve for x
    x = 16,193,837,297.01/136,764.28
  6. Step 6: Final answer
    x = 118,406.92

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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.