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Finding the Fourth Proportional to 159,242.81, 219,729.96 and 91,246.70

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Solution

The fourth proportional to 159,242.81, 219,729.96 and 91,246.70 is: 125,906.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,242.81 : 219,729.96 = 91,246.70 : x
  2. Step 2: Convert to fraction form
    159,242.81/219,729.96 = 91,246.70/x
  3. Step 3: Cross multiply
    159,242.81x = 219,729.96 × 91,246.70
  4. Step 4: Simplify right side
    159,242.81x = 20,049,634,290.46
  5. Step 5: Solve for x
    x = 20,049,634,290.46/159,242.81
  6. Step 6: Final answer
    x = 125,906.06

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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.