Home / 99,387.14-149,128.55-49,471.60

Finding the Fourth Proportional to 99,387.14, 149,128.55 and 49,471.60

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Solution

The fourth proportional to 99,387.14, 149,128.55 and 49,471.60 is: 74,231.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,387.14 : 149,128.55 = 49,471.60 : x
  2. Step 2: Convert to fraction form
    99,387.14/149,128.55 = 49,471.60/x
  3. Step 3: Cross multiply
    99,387.14x = 149,128.55 × 49,471.60
  4. Step 4: Simplify right side
    99,387.14x = 7,377,627,958.27
  5. Step 5: Solve for x
    x = 7,377,627,958.27/99,387.14
  6. Step 6: Final answer
    x = 74,231.21

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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.