Home / 258,534.42-387,801.75-81,055.27

Finding the Fourth Proportional to 258,534.42, 387,801.75 and 81,055.27

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Solution

The fourth proportional to 258,534.42, 387,801.75 and 81,055.27 is: 121,582.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,534.42 : 387,801.75 = 81,055.27 : x
  2. Step 2: Convert to fraction form
    258,534.42/387,801.75 = 81,055.27/x
  3. Step 3: Cross multiply
    258,534.42x = 387,801.75 × 81,055.27
  4. Step 4: Simplify right side
    258,534.42x = 31,433,377,204.16
  5. Step 5: Solve for x
    x = 31,433,377,204.16/258,534.42
  6. Step 6: Final answer
    x = 121,582.95

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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.