Home / 258,105.69-387,007.83-100,149.66

Finding the Fourth Proportional to 258,105.69, 387,007.83 and 100,149.66

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Solution

The fourth proportional to 258,105.69, 387,007.83 and 100,149.66 is: 150,166.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,105.69 : 387,007.83 = 100,149.66 : x
  2. Step 2: Convert to fraction form
    258,105.69/387,007.83 = 100,149.66/x
  3. Step 3: Cross multiply
    258,105.69x = 387,007.83 × 100,149.66
  4. Step 4: Simplify right side
    258,105.69x = 38,758,702,591.84
  5. Step 5: Solve for x
    x = 38,758,702,591.84/258,105.69
  6. Step 6: Final answer
    x = 150,166.01

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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.