Home / 80,820.20-121,230.30-25,416.20

Finding the Fourth Proportional to 80,820.20, 121,230.30 and 25,416.20

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Solution

The fourth proportional to 80,820.20, 121,230.30 and 25,416.20 is: 38,124.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,820.20 : 121,230.30 = 25,416.20 : x
  2. Step 2: Convert to fraction form
    80,820.20/121,230.30 = 25,416.20/x
  3. Step 3: Cross multiply
    80,820.20x = 121,230.30 × 25,416.20
  4. Step 4: Simplify right side
    80,820.20x = 3,081,212,944.71
  5. Step 5: Solve for x
    x = 3,081,212,944.71/80,820.20
  6. Step 6: Final answer
    x = 38,124.29

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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.