Home / 258,131.02-387,251.23-80,651.42

Finding the Fourth Proportional to 258,131.02, 387,251.23 and 80,651.42

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Solution

The fourth proportional to 258,131.02, 387,251.23 and 80,651.42 is: 120,994.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,131.02 : 387,251.23 = 80,651.42 : x
  2. Step 2: Convert to fraction form
    258,131.02/387,251.23 = 80,651.42/x
  3. Step 3: Cross multiply
    258,131.02x = 387,251.23 × 80,651.42
  4. Step 4: Simplify right side
    258,131.02x = 31,232,361,596.25
  5. Step 5: Solve for x
    x = 31,232,361,596.25/258,131.02
  6. Step 6: Final answer
    x = 120,994.22

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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.