Home / 120,918.35-181,353.87-114,917.28

Finding the Fourth Proportional to 120,918.35, 181,353.87 and 114,917.28

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Solution

The fourth proportional to 120,918.35, 181,353.87 and 114,917.28 is: 172,353.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,918.35 : 181,353.87 = 114,917.28 : x
  2. Step 2: Convert to fraction form
    120,918.35/181,353.87 = 114,917.28/x
  3. Step 3: Cross multiply
    120,918.35x = 181,353.87 × 114,917.28
  4. Step 4: Simplify right side
    120,918.35x = 20,840,693,457.87
  5. Step 5: Solve for x
    x = 20,840,693,457.87/120,918.35
  6. Step 6: Final answer
    x = 172,353.45

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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.