Home / 120,808.05-181,231.71-40,853.76

Finding the Fourth Proportional to 120,808.05, 181,231.71 and 40,853.76

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Solution

The fourth proportional to 120,808.05, 181,231.71 and 40,853.76 is: 61,287.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,808.05 : 181,231.71 = 40,853.76 : x
  2. Step 2: Convert to fraction form
    120,808.05/181,231.71 = 40,853.76/x
  3. Step 3: Cross multiply
    120,808.05x = 181,231.71 × 40,853.76
  4. Step 4: Simplify right side
    120,808.05x = 7,403,996,784.73
  5. Step 5: Solve for x
    x = 7,403,996,784.73/120,808.05
  6. Step 6: Final answer
    x = 61,287.28

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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.