Home / 120,828.22-181,301.86-54,316.68

Finding the Fourth Proportional to 120,828.22, 181,301.86 and 54,316.68

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Solution

The fourth proportional to 120,828.22, 181,301.86 and 54,316.68 is: 81,501.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,828.22 : 181,301.86 = 54,316.68 : x
  2. Step 2: Convert to fraction form
    120,828.22/181,301.86 = 54,316.68/x
  3. Step 3: Cross multiply
    120,828.22x = 181,301.86 × 54,316.68
  4. Step 4: Simplify right side
    120,828.22x = 9,847,715,113.02
  5. Step 5: Solve for x
    x = 9,847,715,113.02/120,828.22
  6. Step 6: Final answer
    x = 81,501.78

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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.