Home / 136,304.32-188,087.52-79,705.84

Finding the Fourth Proportional to 136,304.32, 188,087.52 and 79,705.84

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Solution

The fourth proportional to 136,304.32, 188,087.52 and 79,705.84 is: 109,986.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,304.32 : 188,087.52 = 79,705.84 : x
  2. Step 2: Convert to fraction form
    136,304.32/188,087.52 = 79,705.84/x
  3. Step 3: Cross multiply
    136,304.32x = 188,087.52 × 79,705.84
  4. Step 4: Simplify right side
    136,304.32x = 14,991,673,775.12
  5. Step 5: Solve for x
    x = 14,991,673,775.12/136,304.32
  6. Step 6: Final answer
    x = 109,986.78

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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.