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Finding the Fourth Proportional to 115,575.87, 158,882.34 and 99,383.88

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Solution

The fourth proportional to 115,575.87, 158,882.34 and 99,383.88 is: 136,623.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,575.87 : 158,882.34 = 99,383.88 : x
  2. Step 2: Convert to fraction form
    115,575.87/158,882.34 = 99,383.88/x
  3. Step 3: Cross multiply
    115,575.87x = 158,882.34 × 99,383.88
  4. Step 4: Simplify right side
    115,575.87x = 15,790,343,412.68
  5. Step 5: Solve for x
    x = 15,790,343,412.68/115,575.87
  6. Step 6: Final answer
    x = 136,623.18

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.