Home / 115,405.62-173,127.87-53,074.50

Finding the Fourth Proportional to 115,405.62, 173,127.87 and 53,074.50

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Solution

The fourth proportional to 115,405.62, 173,127.87 and 53,074.50 is: 79,620.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,405.62 : 173,127.87 = 53,074.50 : x
  2. Step 2: Convert to fraction form
    115,405.62/173,127.87 = 53,074.50/x
  3. Step 3: Cross multiply
    115,405.62x = 173,127.87 × 53,074.50
  4. Step 4: Simplify right side
    115,405.62x = 9,188,675,136.32
  5. Step 5: Solve for x
    x = 9,188,675,136.32/115,405.62
  6. Step 6: Final answer
    x = 79,620.69

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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.