Home / 258,553.08-387,818.34-81,056.04

Finding the Fourth Proportional to 258,553.08, 387,818.34 and 81,056.04

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Solution

The fourth proportional to 258,553.08, 387,818.34 and 81,056.04 is: 121,580.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,553.08 : 387,818.34 = 81,056.04 : x
  2. Step 2: Convert to fraction form
    258,553.08/387,818.34 = 81,056.04/x
  3. Step 3: Cross multiply
    258,553.08x = 387,818.34 × 81,056.04
  4. Step 4: Simplify right side
    258,553.08x = 31,435,018,879.77
  5. Step 5: Solve for x
    x = 31,435,018,879.77/258,553.08
  6. Step 6: Final answer
    x = 121,580.52

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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.