Home / 130,811.10-195,957.45-71,540.70

Finding the Fourth Proportional to 130,811.10, 195,957.45 and 71,540.70

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Solution

The fourth proportional to 130,811.10, 195,957.45 and 71,540.70 is: 107,169.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,811.10 : 195,957.45 = 71,540.70 : x
  2. Step 2: Convert to fraction form
    130,811.10/195,957.45 = 71,540.70/x
  3. Step 3: Cross multiply
    130,811.10x = 195,957.45 × 71,540.70
  4. Step 4: Simplify right side
    130,811.10x = 14,018,933,143.22
  5. Step 5: Solve for x
    x = 14,018,933,143.22/130,811.10
  6. Step 6: Final answer
    x = 107,169.29

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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.