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Finding the Fourth Proportional to 115,897.70, 173,846.55 and 100,691.30

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Solution

The fourth proportional to 115,897.70, 173,846.55 and 100,691.30 is: 151,036.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,897.70 : 173,846.55 = 100,691.30 : x
  2. Step 2: Convert to fraction form
    115,897.70/173,846.55 = 100,691.30/x
  3. Step 3: Cross multiply
    115,897.70x = 173,846.55 × 100,691.30
  4. Step 4: Simplify right side
    115,897.70x = 17,504,835,120.02
  5. Step 5: Solve for x
    x = 17,504,835,120.02/115,897.70
  6. Step 6: Final answer
    x = 151,036.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.