Home / 136,885.52-188,891.35-79,515.34

Finding the Fourth Proportional to 136,885.52, 188,891.35 and 79,515.34

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Solution

The fourth proportional to 136,885.52, 188,891.35 and 79,515.34 is: 109,724.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,885.52 : 188,891.35 = 79,515.34 : x
  2. Step 2: Convert to fraction form
    136,885.52/188,891.35 = 79,515.34/x
  3. Step 3: Cross multiply
    136,885.52x = 188,891.35 × 79,515.34
  4. Step 4: Simplify right side
    136,885.52x = 15,019,759,247.29
  5. Step 5: Solve for x
    x = 15,019,759,247.29/136,885.52
  6. Step 6: Final answer
    x = 109,724.97

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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.