Home / 258,566.04-387,849.09-81,088.56

Finding the Fourth Proportional to 258,566.04, 387,849.09 and 81,088.56

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Solution

The fourth proportional to 258,566.04, 387,849.09 and 81,088.56 is: 121,632.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,566.04 : 387,849.09 = 81,088.56 : x
  2. Step 2: Convert to fraction form
    258,566.04/387,849.09 = 81,088.56/x
  3. Step 3: Cross multiply
    258,566.04x = 387,849.09 × 81,088.56
  4. Step 4: Simplify right side
    258,566.04x = 31,450,124,205.41
  5. Step 5: Solve for x
    x = 31,450,124,205.41/258,566.04
  6. Step 6: Final answer
    x = 121,632.85

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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.