Home / 258,653.32-387,996.37-81,167.33

Finding the Fourth Proportional to 258,653.32, 387,996.37 and 81,167.33

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Solution

The fourth proportional to 258,653.32, 387,996.37 and 81,167.33 is: 121,756.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,653.32 : 387,996.37 = 81,167.33 : x
  2. Step 2: Convert to fraction form
    258,653.32/387,996.37 = 81,167.33/x
  3. Step 3: Cross multiply
    258,653.32x = 387,996.37 × 81,167.33
  4. Step 4: Simplify right side
    258,653.32x = 31,492,629,402.59
  5. Step 5: Solve for x
    x = 31,492,629,402.59/258,653.32
  6. Step 6: Final answer
    x = 121,756.14

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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.