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Finding the Fourth Proportional to 145,388.97, 218,028.11 and 95,455.71

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Solution

The fourth proportional to 145,388.97, 218,028.11 and 95,455.71 is: 143,147.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,388.97 : 218,028.11 = 95,455.71 : x
  2. Step 2: Convert to fraction form
    145,388.97/218,028.11 = 95,455.71/x
  3. Step 3: Cross multiply
    145,388.97x = 218,028.11 × 95,455.71
  4. Step 4: Simplify right side
    145,388.97x = 20,812,027,562.73
  5. Step 5: Solve for x
    x = 20,812,027,562.73/145,388.97
  6. Step 6: Final answer
    x = 143,147.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.