Home / 153,581.28-211,954.41-85,620.12

Finding the Fourth Proportional to 153,581.28, 211,954.41 and 85,620.12

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Solution

The fourth proportional to 153,581.28, 211,954.41 and 85,620.12 is: 118,162.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,581.28 : 211,954.41 = 85,620.12 : x
  2. Step 2: Convert to fraction form
    153,581.28/211,954.41 = 85,620.12/x
  3. Step 3: Cross multiply
    153,581.28x = 211,954.41 × 85,620.12
  4. Step 4: Simplify right side
    153,581.28x = 18,147,562,018.73
  5. Step 5: Solve for x
    x = 18,147,562,018.73/153,581.28
  6. Step 6: Final answer
    x = 118,162.59

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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.