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Finding the Fourth Proportional to 115,090.44, 158,769.79 and 89,421.13

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Solution

The fourth proportional to 115,090.44, 158,769.79 and 89,421.13 is: 123,358.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,090.44 : 158,769.79 = 89,421.13 : x
  2. Step 2: Convert to fraction form
    115,090.44/158,769.79 = 89,421.13/x
  3. Step 3: Cross multiply
    115,090.44x = 158,769.79 × 89,421.13
  4. Step 4: Simplify right side
    115,090.44x = 14,197,374,652.14
  5. Step 5: Solve for x
    x = 14,197,374,652.14/115,090.44
  6. Step 6: Final answer
    x = 123,358.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.