Home / 135,813.90-187,414.34-75,381.64

Finding the Fourth Proportional to 135,813.90, 187,414.34 and 75,381.64

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Solution

The fourth proportional to 135,813.90, 187,414.34 and 75,381.64 is: 104,021.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,813.90 : 187,414.34 = 75,381.64 : x
  2. Step 2: Convert to fraction form
    135,813.90/187,414.34 = 75,381.64/x
  3. Step 3: Cross multiply
    135,813.90x = 187,414.34 × 75,381.64
  4. Step 4: Simplify right side
    135,813.90x = 14,127,600,308.72
  5. Step 5: Solve for x
    x = 14,127,600,308.72/135,813.90
  6. Step 6: Final answer
    x = 104,021.76

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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.