Home / 119,985.12-180,067.68-45,179.04

Finding the Fourth Proportional to 119,985.12, 180,067.68 and 45,179.04

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Solution

The fourth proportional to 119,985.12, 180,067.68 and 45,179.04 is: 67,802.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,985.12 : 180,067.68 = 45,179.04 : x
  2. Step 2: Convert to fraction form
    119,985.12/180,067.68 = 45,179.04/x
  3. Step 3: Cross multiply
    119,985.12x = 180,067.68 × 45,179.04
  4. Step 4: Simplify right side
    119,985.12x = 8,135,284,917.43
  5. Step 5: Solve for x
    x = 8,135,284,917.43/119,985.12
  6. Step 6: Final answer
    x = 67,802.45

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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.