Home / 258,581.34-387,913.32-90,150.12

Finding the Fourth Proportional to 258,581.34, 387,913.32 and 90,150.12

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Solution

The fourth proportional to 258,581.34, 387,913.32 and 90,150.12 is: 135,239.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,581.34 : 387,913.32 = 90,150.12 : x
  2. Step 2: Convert to fraction form
    258,581.34/387,913.32 = 90,150.12/x
  3. Step 3: Cross multiply
    258,581.34x = 387,913.32 × 90,150.12
  4. Step 4: Simplify right side
    258,581.34x = 34,970,432,347.60
  5. Step 5: Solve for x
    x = 34,970,432,347.60/258,581.34
  6. Step 6: Final answer
    x = 135,239.58

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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.