Home / 130,145.60-195,120.24-71,031.68

Finding the Fourth Proportional to 130,145.60, 195,120.24 and 71,031.68

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Solution

The fourth proportional to 130,145.60, 195,120.24 and 71,031.68 is: 106,493.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,145.60 : 195,120.24 = 71,031.68 : x
  2. Step 2: Convert to fraction form
    130,145.60/195,120.24 = 71,031.68/x
  3. Step 3: Cross multiply
    130,145.60x = 195,120.24 × 71,031.68
  4. Step 4: Simplify right side
    130,145.60x = 13,859,718,449.20
  5. Step 5: Solve for x
    x = 13,859,718,449.20/130,145.60
  6. Step 6: Final answer
    x = 106,493.95

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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.