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Finding the Fourth Proportional to 135,253.44, 186,628.32 and 87,508.80

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Solution

The fourth proportional to 135,253.44, 186,628.32 and 87,508.80 is: 120,748.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,253.44 : 186,628.32 = 87,508.80 : x
  2. Step 2: Convert to fraction form
    135,253.44/186,628.32 = 87,508.80/x
  3. Step 3: Cross multiply
    135,253.44x = 186,628.32 × 87,508.80
  4. Step 4: Simplify right side
    135,253.44x = 16,331,620,329.22
  5. Step 5: Solve for x
    x = 16,331,620,329.22/135,253.44
  6. Step 6: Final answer
    x = 120,748.28

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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.