Home / 86,144.32-129,203.52-55,195.84

Finding the Fourth Proportional to 86,144.32, 129,203.52 and 55,195.84

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Solution

The fourth proportional to 86,144.32, 129,203.52 and 55,195.84 is: 82,785.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,144.32 : 129,203.52 = 55,195.84 : x
  2. Step 2: Convert to fraction form
    86,144.32/129,203.52 = 55,195.84/x
  3. Step 3: Cross multiply
    86,144.32x = 129,203.52 × 55,195.84
  4. Step 4: Simplify right side
    86,144.32x = 7,131,496,817.36
  5. Step 5: Solve for x
    x = 7,131,496,817.36/86,144.32
  6. Step 6: Final answer
    x = 82,785.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.