Home / 205,386.43-308,076.31-79,054.12

Finding the Fourth Proportional to 205,386.43, 308,076.31 and 79,054.12

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Solution

The fourth proportional to 205,386.43, 308,076.31 and 79,054.12 is: 118,579.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,386.43 : 308,076.31 = 79,054.12 : x
  2. Step 2: Convert to fraction form
    205,386.43/308,076.31 = 79,054.12/x
  3. Step 3: Cross multiply
    205,386.43x = 308,076.31 × 79,054.12
  4. Step 4: Simplify right side
    205,386.43x = 24,354,699,886.20
  5. Step 5: Solve for x
    x = 24,354,699,886.20/205,386.43
  6. Step 6: Final answer
    x = 118,579.89

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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.