Home / 144,345.03-199,196.40-80,682.78

Finding the Fourth Proportional to 144,345.03, 199,196.40 and 80,682.78

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Solution

The fourth proportional to 144,345.03, 199,196.40 and 80,682.78 is: 111,342.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,345.03 : 199,196.40 = 80,682.78 : x
  2. Step 2: Convert to fraction form
    144,345.03/199,196.40 = 80,682.78/x
  3. Step 3: Cross multiply
    144,345.03x = 199,196.40 × 80,682.78
  4. Step 4: Simplify right side
    144,345.03x = 16,071,719,317.99
  5. Step 5: Solve for x
    x = 16,071,719,317.99/144,345.03
  6. Step 6: Final answer
    x = 111,342.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.