Home / 258,595.36-387,934.32-90,164.12

Finding the Fourth Proportional to 258,595.36, 387,934.32 and 90,164.12

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Solution

The fourth proportional to 258,595.36, 387,934.32 and 90,164.12 is: 135,260.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,595.36 : 387,934.32 = 90,164.12 : x
  2. Step 2: Convert to fraction form
    258,595.36/387,934.32 = 90,164.12/x
  3. Step 3: Cross multiply
    258,595.36x = 387,934.32 × 90,164.12
  4. Step 4: Simplify right side
    258,595.36x = 34,977,756,580.60
  5. Step 5: Solve for x
    x = 34,977,756,580.60/258,595.36
  6. Step 6: Final answer
    x = 135,260.57

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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.