Home / 144,795.12-199,814.76-81,132.72

Finding the Fourth Proportional to 144,795.12, 199,814.76 and 81,132.72

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Solution

The fourth proportional to 144,795.12, 199,814.76 and 81,132.72 is: 111,961.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,795.12 : 199,814.76 = 81,132.72 : x
  2. Step 2: Convert to fraction form
    144,795.12/199,814.76 = 81,132.72/x
  3. Step 3: Cross multiply
    144,795.12x = 199,814.76 × 81,132.72
  4. Step 4: Simplify right side
    144,795.12x = 16,211,514,974.95
  5. Step 5: Solve for x
    x = 16,211,514,974.95/144,795.12
  6. Step 6: Final answer
    x = 111,961.75

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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.