Home / 130,811.60-196,217.40-129,429.20

Finding the Fourth Proportional to 130,811.60, 196,217.40 and 129,429.20

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Solution

The fourth proportional to 130,811.60, 196,217.40 and 129,429.20 is: 194,143.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,811.60 : 196,217.40 = 129,429.20 : x
  2. Step 2: Convert to fraction form
    130,811.60/196,217.40 = 129,429.20/x
  3. Step 3: Cross multiply
    130,811.60x = 196,217.40 × 129,429.20
  4. Step 4: Simplify right side
    130,811.60x = 25,396,261,108.08
  5. Step 5: Solve for x
    x = 25,396,261,108.08/130,811.60
  6. Step 6: Final answer
    x = 194,143.80

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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.