Home / 129,972.20-195,031.20-55,079.60

Finding the Fourth Proportional to 129,972.20, 195,031.20 and 55,079.60

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Solution

The fourth proportional to 129,972.20, 195,031.20 and 55,079.60 is: 82,650.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,972.20 : 195,031.20 = 55,079.60 : x
  2. Step 2: Convert to fraction form
    129,972.20/195,031.20 = 55,079.60/x
  3. Step 3: Cross multiply
    129,972.20x = 195,031.20 × 55,079.60
  4. Step 4: Simplify right side
    129,972.20x = 10,742,240,483.52
  5. Step 5: Solve for x
    x = 10,742,240,483.52/129,972.20
  6. Step 6: Final answer
    x = 82,650.29

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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.