Home / 210,015.20-289,949.46-129,552.68

Finding the Fourth Proportional to 210,015.20, 289,949.46 and 129,552.68

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Solution

The fourth proportional to 210,015.20, 289,949.46 and 129,552.68 is: 178,861.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,015.20 : 289,949.46 = 129,552.68 : x
  2. Step 2: Convert to fraction form
    210,015.20/289,949.46 = 129,552.68/x
  3. Step 3: Cross multiply
    210,015.20x = 289,949.46 × 129,552.68
  4. Step 4: Simplify right side
    210,015.20x = 37,563,729,607.55
  5. Step 5: Solve for x
    x = 37,563,729,607.55/210,015.20
  6. Step 6: Final answer
    x = 178,861.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.