Home / 258,106.69-387,009.33-100,150.66

Finding the Fourth Proportional to 258,106.69, 387,009.33 and 100,150.66

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Solution

The fourth proportional to 258,106.69, 387,009.33 and 100,150.66 is: 150,167.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,106.69 : 387,009.33 = 100,150.66 : x
  2. Step 2: Convert to fraction form
    258,106.69/387,009.33 = 100,150.66/x
  3. Step 3: Cross multiply
    258,106.69x = 387,009.33 × 100,150.66
  4. Step 4: Simplify right side
    258,106.69x = 38,759,239,825.66
  5. Step 5: Solve for x
    x = 38,759,239,825.66/258,106.69
  6. Step 6: Final answer
    x = 150,167.51

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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.