Home / 136,221.33-187,982.49-78,863.07

Finding the Fourth Proportional to 136,221.33, 187,982.49 and 78,863.07

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Solution

The fourth proportional to 136,221.33, 187,982.49 and 78,863.07 is: 108,829.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,221.33 : 187,982.49 = 78,863.07 : x
  2. Step 2: Convert to fraction form
    136,221.33/187,982.49 = 78,863.07/x
  3. Step 3: Cross multiply
    136,221.33x = 187,982.49 × 78,863.07
  4. Step 4: Simplify right side
    136,221.33x = 14,824,875,873.33
  5. Step 5: Solve for x
    x = 14,824,875,873.33/136,221.33
  6. Step 6: Final answer
    x = 108,829.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.