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Finding the Fourth Proportional to 158,523.30, 218,770.54 and 86,906.34

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Solution

The fourth proportional to 158,523.30, 218,770.54 and 86,906.34 is: 119,935.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,523.30 : 218,770.54 = 86,906.34 : x
  2. Step 2: Convert to fraction form
    158,523.30/218,770.54 = 86,906.34/x
  3. Step 3: Cross multiply
    158,523.30x = 218,770.54 × 86,906.34
  4. Step 4: Simplify right side
    158,523.30x = 19,012,546,713.96
  5. Step 5: Solve for x
    x = 19,012,546,713.96/158,523.30
  6. Step 6: Final answer
    x = 119,935.35

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1.5x scale

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.