Home / 135,334.34-186,761.78-74,909.18

Finding the Fourth Proportional to 135,334.34, 186,761.78 and 74,909.18

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Solution

The fourth proportional to 135,334.34, 186,761.78 and 74,909.18 is: 103,374.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,334.34 : 186,761.78 = 74,909.18 : x
  2. Step 2: Convert to fraction form
    135,334.34/186,761.78 = 74,909.18/x
  3. Step 3: Cross multiply
    135,334.34x = 186,761.78 × 74,909.18
  4. Step 4: Simplify right side
    135,334.34x = 13,990,171,795.14
  5. Step 5: Solve for x
    x = 13,990,171,795.14/135,334.34
  6. Step 6: Final answer
    x = 103,374.88

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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.