Home / 135,422.30-186,880.46-74,991.64

Finding the Fourth Proportional to 135,422.30, 186,880.46 and 74,991.64

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Solution

The fourth proportional to 135,422.30, 186,880.46 and 74,991.64 is: 103,487.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,422.30 : 186,880.46 = 74,991.64 : x
  2. Step 2: Convert to fraction form
    135,422.30/186,880.46 = 74,991.64/x
  3. Step 3: Cross multiply
    135,422.30x = 186,880.46 × 74,991.64
  4. Step 4: Simplify right side
    135,422.30x = 14,014,472,179.35
  5. Step 5: Solve for x
    x = 14,014,472,179.35/135,422.30
  6. Step 6: Final answer
    x = 103,487.18

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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.