Home / 89,238.12-133,594.16-78,166.44

Finding the Fourth Proportional to 89,238.12, 133,594.16 and 78,166.44

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Solution

The fourth proportional to 89,238.12, 133,594.16 and 78,166.44 is: 117,019.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,238.12 : 133,594.16 = 78,166.44 : x
  2. Step 2: Convert to fraction form
    89,238.12/133,594.16 = 78,166.44/x
  3. Step 3: Cross multiply
    89,238.12x = 133,594.16 × 78,166.44
  4. Step 4: Simplify right side
    89,238.12x = 10,442,579,891.99
  5. Step 5: Solve for x
    x = 10,442,579,891.99/89,238.12
  6. Step 6: Final answer
    x = 117,019.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.