Home / 109,824.12-151,635.38-86,819.58

Finding the Fourth Proportional to 109,824.12, 151,635.38 and 86,819.58

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Solution

The fourth proportional to 109,824.12, 151,635.38 and 86,819.58 is: 119,872.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,824.12 : 151,635.38 = 86,819.58 : x
  2. Step 2: Convert to fraction form
    109,824.12/151,635.38 = 86,819.58/x
  3. Step 3: Cross multiply
    109,824.12x = 151,635.38 × 86,819.58
  4. Step 4: Simplify right side
    109,824.12x = 13,164,919,570.64
  5. Step 5: Solve for x
    x = 13,164,919,570.64/109,824.12
  6. Step 6: Final answer
    x = 119,872.75

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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.