Home / 130,835.80-195,864.90-86,512.60

Finding the Fourth Proportional to 130,835.80, 195,864.90 and 86,512.60

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Solution

The fourth proportional to 130,835.80, 195,864.90 and 86,512.60 is: 129,511.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,835.80 : 195,864.90 = 86,512.60 : x
  2. Step 2: Convert to fraction form
    130,835.80/195,864.90 = 86,512.60/x
  3. Step 3: Cross multiply
    130,835.80x = 195,864.90 × 86,512.60
  4. Step 4: Simplify right side
    130,835.80x = 16,944,781,747.74
  5. Step 5: Solve for x
    x = 16,944,781,747.74/130,835.80
  6. Step 6: Final answer
    x = 129,511.81

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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.