Home / 146,419.80-219,629.70-87,322.20

Finding the Fourth Proportional to 146,419.80, 219,629.70 and 87,322.20

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Solution

The fourth proportional to 146,419.80, 219,629.70 and 87,322.20 is: 130,983.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,419.80 : 219,629.70 = 87,322.20 : x
  2. Step 2: Convert to fraction form
    146,419.80/219,629.70 = 87,322.20/x
  3. Step 3: Cross multiply
    146,419.80x = 219,629.70 × 87,322.20
  4. Step 4: Simplify right side
    146,419.80x = 19,178,548,589.34
  5. Step 5: Solve for x
    x = 19,178,548,589.34/146,419.80
  6. Step 6: Final answer
    x = 130,983.30

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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.