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Finding the Fourth Proportional to 161,995.78, 223,549.86 and 90,373.96

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Solution

The fourth proportional to 161,995.78, 223,549.86 and 90,373.96 is: 124,713.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,995.78 : 223,549.86 = 90,373.96 : x
  2. Step 2: Convert to fraction form
    161,995.78/223,549.86 = 90,373.96/x
  3. Step 3: Cross multiply
    161,995.78x = 223,549.86 × 90,373.96
  4. Step 4: Simplify right side
    161,995.78x = 20,203,084,536.03
  5. Step 5: Solve for x
    x = 20,203,084,536.03/161,995.78
  6. Step 6: Final answer
    x = 124,713.65

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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.