Home / 135,961.80-187,653.96-86,871.86

Finding the Fourth Proportional to 135,961.80, 187,653.96 and 86,871.86

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Solution

The fourth proportional to 135,961.80, 187,653.96 and 86,871.86 is: 119,900.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,961.80 : 187,653.96 = 86,871.86 : x
  2. Step 2: Convert to fraction form
    135,961.80/187,653.96 = 86,871.86/x
  3. Step 3: Cross multiply
    135,961.80x = 187,653.96 × 86,871.86
  4. Step 4: Simplify right side
    135,961.80x = 16,301,848,541.57
  5. Step 5: Solve for x
    x = 16,301,848,541.57/135,961.80
  6. Step 6: Final answer
    x = 119,900.21

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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.