Home / 130,142.52-179,615.94-82,400.31

Finding the Fourth Proportional to 130,142.52, 179,615.94 and 82,400.31

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Solution

The fourth proportional to 130,142.52, 179,615.94 and 82,400.31 is: 113,724.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,142.52 : 179,615.94 = 82,400.31 : x
  2. Step 2: Convert to fraction form
    130,142.52/179,615.94 = 82,400.31/x
  3. Step 3: Cross multiply
    130,142.52x = 179,615.94 × 82,400.31
  4. Step 4: Simplify right side
    130,142.52x = 14,800,409,136.94
  5. Step 5: Solve for x
    x = 14,800,409,136.94/130,142.52
  6. Step 6: Final answer
    x = 113,724.62

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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.