Home / 205,675.12-283,809.72-115,021.72

Finding the Fourth Proportional to 205,675.12, 283,809.72 and 115,021.72

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Solution

The fourth proportional to 205,675.12, 283,809.72 and 115,021.72 is: 158,717.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,675.12 : 283,809.72 = 115,021.72 : x
  2. Step 2: Convert to fraction form
    205,675.12/283,809.72 = 115,021.72/x
  3. Step 3: Cross multiply
    205,675.12x = 283,809.72 × 115,021.72
  4. Step 4: Simplify right side
    205,675.12x = 32,644,282,147.12
  5. Step 5: Solve for x
    x = 32,644,282,147.12/205,675.12
  6. Step 6: Final answer
    x = 158,717.70

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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.