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Finding the Fourth Proportional to 258,106.62, 387,259.26 and 124,976.64

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Solution

The fourth proportional to 258,106.62, 387,259.26 and 124,976.64 is: 187,513.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,106.62 : 387,259.26 = 124,976.64 : x
  2. Step 2: Convert to fraction form
    258,106.62/387,259.26 = 124,976.64/x
  3. Step 3: Cross multiply
    258,106.62x = 387,259.26 × 124,976.64
  4. Step 4: Simplify right side
    258,106.62x = 48,398,361,123.69
  5. Step 5: Solve for x
    x = 48,398,361,123.69/258,106.62
  6. Step 6: Final answer
    x = 187,513.06

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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.