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Finding the Fourth Proportional to 115,367.40, 159,218.16 and 70,034.88

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Solution

The fourth proportional to 115,367.40, 159,218.16 and 70,034.88 is: 96,654.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,367.40 : 159,218.16 = 70,034.88 : x
  2. Step 2: Convert to fraction form
    115,367.40/159,218.16 = 70,034.88/x
  3. Step 3: Cross multiply
    115,367.40x = 159,218.16 × 70,034.88
  4. Step 4: Simplify right side
    115,367.40x = 11,150,824,729.42
  5. Step 5: Solve for x
    x = 11,150,824,729.42/115,367.40
  6. Step 6: Final answer
    x = 96,654.90

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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.