Home / 136,708.64-188,659.59-79,361.25

Finding the Fourth Proportional to 136,708.64, 188,659.59 and 79,361.25

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Solution

The fourth proportional to 136,708.64, 188,659.59 and 79,361.25 is: 109,519.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,708.64 : 188,659.59 = 79,361.25 : x
  2. Step 2: Convert to fraction form
    136,708.64/188,659.59 = 79,361.25/x
  3. Step 3: Cross multiply
    136,708.64x = 188,659.59 × 79,361.25
  4. Step 4: Simplify right side
    136,708.64x = 14,972,260,886.89
  5. Step 5: Solve for x
    x = 14,972,260,886.89/136,708.64
  6. Step 6: Final answer
    x = 109,519.50

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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.