Home / 130,103.20-195,154.80-80,020.90

Finding the Fourth Proportional to 130,103.20, 195,154.80 and 80,020.90

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Solution

The fourth proportional to 130,103.20, 195,154.80 and 80,020.90 is: 120,031.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,103.20 : 195,154.80 = 80,020.90 : x
  2. Step 2: Convert to fraction form
    130,103.20/195,154.80 = 80,020.90/x
  3. Step 3: Cross multiply
    130,103.20x = 195,154.80 × 80,020.90
  4. Step 4: Simplify right side
    130,103.20x = 15,616,462,735.32
  5. Step 5: Solve for x
    x = 15,616,462,735.32/130,103.20
  6. Step 6: Final answer
    x = 120,031.35

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1.5x scale

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.