Home / 258,066.96-387,100.30-80,589.18

Finding the Fourth Proportional to 258,066.96, 387,100.30 and 80,589.18

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Solution

The fourth proportional to 258,066.96, 387,100.30 and 80,589.18 is: 120,883.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,066.96 : 387,100.30 = 80,589.18 : x
  2. Step 2: Convert to fraction form
    258,066.96/387,100.30 = 80,589.18/x
  3. Step 3: Cross multiply
    258,066.96x = 387,100.30 × 80,589.18
  4. Step 4: Simplify right side
    258,066.96x = 31,196,095,553.28
  5. Step 5: Solve for x
    x = 31,196,095,553.28/258,066.96
  6. Step 6: Final answer
    x = 120,883.73

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1.5x scale

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.