Home / 135,045.72-186,325.14-77,682.06

Finding the Fourth Proportional to 135,045.72, 186,325.14 and 77,682.06

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Solution

The fourth proportional to 135,045.72, 186,325.14 and 77,682.06 is: 107,179.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,045.72 : 186,325.14 = 77,682.06 : x
  2. Step 2: Convert to fraction form
    135,045.72/186,325.14 = 77,682.06/x
  3. Step 3: Cross multiply
    135,045.72x = 186,325.14 × 77,682.06
  4. Step 4: Simplify right side
    135,045.72x = 14,474,120,704.99
  5. Step 5: Solve for x
    x = 14,474,120,704.99/135,045.72
  6. Step 6: Final answer
    x = 107,179.41

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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.