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Finding the Fourth Proportional to 126,581.84, 189,801.68 and 42,297.60

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Solution

The fourth proportional to 126,581.84, 189,801.68 and 42,297.60 is: 63,422.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,581.84 : 189,801.68 = 42,297.60 : x
  2. Step 2: Convert to fraction form
    126,581.84/189,801.68 = 42,297.60/x
  3. Step 3: Cross multiply
    126,581.84x = 189,801.68 × 42,297.60
  4. Step 4: Simplify right side
    126,581.84x = 8,028,155,539.97
  5. Step 5: Solve for x
    x = 8,028,155,539.97/126,581.84
  6. Step 6: Final answer
    x = 63,422.65

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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.