Home / 217,605.06-326,172.16-91,313.91

Finding the Fourth Proportional to 217,605.06, 326,172.16 and 91,313.91

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Solution

The fourth proportional to 217,605.06, 326,172.16 and 91,313.91 is: 136,872.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,605.06 : 326,172.16 = 91,313.91 : x
  2. Step 2: Convert to fraction form
    217,605.06/326,172.16 = 91,313.91/x
  3. Step 3: Cross multiply
    217,605.06x = 326,172.16 × 91,313.91
  4. Step 4: Simplify right side
    217,605.06x = 29,784,055,262.75
  5. Step 5: Solve for x
    x = 29,784,055,262.75/217,605.06
  6. Step 6: Final answer
    x = 136,872.07

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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.