Home / 258,132.02-387,252.73-80,652.42

Finding the Fourth Proportional to 258,132.02, 387,252.73 and 80,652.42

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Solution

The fourth proportional to 258,132.02, 387,252.73 and 80,652.42 is: 120,995.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,132.02 : 387,252.73 = 80,652.42 : x
  2. Step 2: Convert to fraction form
    258,132.02/387,252.73 = 80,652.42/x
  3. Step 3: Cross multiply
    258,132.02x = 387,252.73 × 80,652.42
  4. Step 4: Simplify right side
    258,132.02x = 31,232,869,826.11
  5. Step 5: Solve for x
    x = 31,232,869,826.11/258,132.02
  6. Step 6: Final answer
    x = 120,995.72

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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.