Home / 258,537.32-387,806.09-81,058.16

Finding the Fourth Proportional to 258,537.32, 387,806.09 and 81,058.16

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Solution

The fourth proportional to 258,537.32, 387,806.09 and 81,058.16 is: 121,587.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,537.32 : 387,806.09 = 81,058.16 : x
  2. Step 2: Convert to fraction form
    258,537.32/387,806.09 = 81,058.16/x
  3. Step 3: Cross multiply
    258,537.32x = 387,806.09 × 81,058.16
  4. Step 4: Simplify right side
    258,537.32x = 31,434,848,092.19
  5. Step 5: Solve for x
    x = 31,434,848,092.19/258,537.32
  6. Step 6: Final answer
    x = 121,587.27

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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.