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Finding the Fourth Proportional to 135,682.79, 187,025.98 and 106,955.64

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Solution

The fourth proportional to 135,682.79, 187,025.98 and 106,955.64 is: 147,428.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,682.79 : 187,025.98 = 106,955.64 : x
  2. Step 2: Convert to fraction form
    135,682.79/187,025.98 = 106,955.64/x
  3. Step 3: Cross multiply
    135,682.79x = 187,025.98 × 106,955.64
  4. Step 4: Simplify right side
    135,682.79x = 20,003,482,786.27
  5. Step 5: Solve for x
    x = 20,003,482,786.27/135,682.79
  6. Step 6: Final answer
    x = 147,428.29

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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.