Home / 131,322.80-196,595.40-86,999.60

Finding the Fourth Proportional to 131,322.80, 196,595.40 and 86,999.60

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Solution

The fourth proportional to 131,322.80, 196,595.40 and 86,999.60 is: 130,241.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,322.80 : 196,595.40 = 86,999.60 : x
  2. Step 2: Convert to fraction form
    131,322.80/196,595.40 = 86,999.60/x
  3. Step 3: Cross multiply
    131,322.80x = 196,595.40 × 86,999.60
  4. Step 4: Simplify right side
    131,322.80x = 17,103,721,161.84
  5. Step 5: Solve for x
    x = 17,103,721,161.84/131,322.80
  6. Step 6: Final answer
    x = 130,241.83

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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.