Home / 120,815.40-181,287.90-50,701.80

Finding the Fourth Proportional to 120,815.40, 181,287.90 and 50,701.80

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Solution

The fourth proportional to 120,815.40, 181,287.90 and 50,701.80 is: 76,079.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,815.40 : 181,287.90 = 50,701.80 : x
  2. Step 2: Convert to fraction form
    120,815.40/181,287.90 = 50,701.80/x
  3. Step 3: Cross multiply
    120,815.40x = 181,287.90 × 50,701.80
  4. Step 4: Simplify right side
    120,815.40x = 9,191,622,848.22
  5. Step 5: Solve for x
    x = 9,191,622,848.22/120,815.40
  6. Step 6: Final answer
    x = 76,079.89

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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.