Home / 120,828.60-181,286.10-50,729.40

Finding the Fourth Proportional to 120,828.60, 181,286.10 and 50,729.40

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Solution

The fourth proportional to 120,828.60, 181,286.10 and 50,729.40 is: 76,112.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,828.60 : 181,286.10 = 50,729.40 : x
  2. Step 2: Convert to fraction form
    120,828.60/181,286.10 = 50,729.40/x
  3. Step 3: Cross multiply
    120,828.60x = 181,286.10 × 50,729.40
  4. Step 4: Simplify right side
    120,828.60x = 9,196,535,081.34
  5. Step 5: Solve for x
    x = 9,196,535,081.34/120,828.60
  6. Step 6: Final answer
    x = 76,112.24

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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.