Home / 118,900.11-178,356.45-30,154.41

Finding the Fourth Proportional to 118,900.11, 178,356.45 and 30,154.41

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Solution

The fourth proportional to 118,900.11, 178,356.45 and 30,154.41 is: 45,233.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,900.11 : 178,356.45 = 30,154.41 : x
  2. Step 2: Convert to fraction form
    118,900.11/178,356.45 = 30,154.41/x
  3. Step 3: Cross multiply
    118,900.11x = 178,356.45 × 30,154.41
  4. Step 4: Simplify right side
    118,900.11x = 5,378,233,519.44
  5. Step 5: Solve for x
    x = 5,378,233,519.44/118,900.11
  6. Step 6: Final answer
    x = 45,233.21

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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.