Home / 130,836.80-195,866.40-86,513.60

Finding the Fourth Proportional to 130,836.80, 195,866.40 and 86,513.60

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Solution

The fourth proportional to 130,836.80, 195,866.40 and 86,513.60 is: 129,513.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,836.80 : 195,866.40 = 86,513.60 : x
  2. Step 2: Convert to fraction form
    130,836.80/195,866.40 = 86,513.60/x
  3. Step 3: Cross multiply
    130,836.80x = 195,866.40 × 86,513.60
  4. Step 4: Simplify right side
    130,836.80x = 16,945,107,383.04
  5. Step 5: Solve for x
    x = 16,945,107,383.04/130,836.80
  6. Step 6: Final answer
    x = 129,513.31

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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.