Home / 130,787.96-196,180.80-86,612.36

Finding the Fourth Proportional to 130,787.96, 196,180.80 and 86,612.36

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Solution

The fourth proportional to 130,787.96, 196,180.80 and 86,612.36 is: 129,917.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,787.96 : 196,180.80 = 86,612.36 : x
  2. Step 2: Convert to fraction form
    130,787.96/196,180.80 = 86,612.36/x
  3. Step 3: Cross multiply
    130,787.96x = 196,180.80 × 86,612.36
  4. Step 4: Simplify right side
    130,787.96x = 16,991,682,074.69
  5. Step 5: Solve for x
    x = 16,991,682,074.69/130,787.96
  6. Step 6: Final answer
    x = 129,917.79

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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.