Home / 258,130.02-387,249.73-80,650.42

Finding the Fourth Proportional to 258,130.02, 387,249.73 and 80,650.42

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Solution

The fourth proportional to 258,130.02, 387,249.73 and 80,650.42 is: 120,992.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,130.02 : 387,249.73 = 80,650.42 : x
  2. Step 2: Convert to fraction form
    258,130.02/387,249.73 = 80,650.42/x
  3. Step 3: Cross multiply
    258,130.02x = 387,249.73 × 80,650.42
  4. Step 4: Simplify right side
    258,130.02x = 31,231,852,199.64
  5. Step 5: Solve for x
    x = 31,231,852,199.64/258,130.02
  6. Step 6: Final answer
    x = 120,992.71

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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.