Home / 213,412.62-320,118.93-73,172.46

Finding the Fourth Proportional to 213,412.62, 320,118.93 and 73,172.46

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Solution

The fourth proportional to 213,412.62, 320,118.93 and 73,172.46 is: 109,758.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,412.62 : 320,118.93 = 73,172.46 : x
  2. Step 2: Convert to fraction form
    213,412.62/320,118.93 = 73,172.46/x
  3. Step 3: Cross multiply
    213,412.62x = 320,118.93 × 73,172.46
  4. Step 4: Simplify right side
    213,412.62x = 23,423,889,600.67
  5. Step 5: Solve for x
    x = 23,423,889,600.67/213,412.62
  6. Step 6: Final answer
    x = 109,758.69

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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.