Home / 135,576.13-187,106.26-75,165.72

Finding the Fourth Proportional to 135,576.13, 187,106.26 and 75,165.72

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Solution

The fourth proportional to 135,576.13, 187,106.26 and 75,165.72 is: 103,734.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,576.13 : 187,106.26 = 75,165.72 : x
  2. Step 2: Convert to fraction form
    135,576.13/187,106.26 = 75,165.72/x
  3. Step 3: Cross multiply
    135,576.13x = 187,106.26 × 75,165.72
  4. Step 4: Simplify right side
    135,576.13x = 14,063,976,749.41
  5. Step 5: Solve for x
    x = 14,063,976,749.41/135,576.13
  6. Step 6: Final answer
    x = 103,734.90

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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.