Home / 120,739.29-181,035.09-57,578.73

Finding the Fourth Proportional to 120,739.29, 181,035.09 and 57,578.73

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Solution

The fourth proportional to 120,739.29, 181,035.09 and 57,578.73 is: 86,332.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,739.29 : 181,035.09 = 57,578.73 : x
  2. Step 2: Convert to fraction form
    120,739.29/181,035.09 = 57,578.73/x
  3. Step 3: Cross multiply
    120,739.29x = 181,035.09 × 57,578.73
  4. Step 4: Simplify right side
    120,739.29x = 10,423,771,069.02
  5. Step 5: Solve for x
    x = 10,423,771,069.02/120,739.29
  6. Step 6: Final answer
    x = 86,332.88

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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.