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Finding the Fourth Proportional to 115,291.89, 159,103.02 and 64,307.92

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Solution

The fourth proportional to 115,291.89, 159,103.02 and 64,307.92 is: 88,745.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,291.89 : 159,103.02 = 64,307.92 : x
  2. Step 2: Convert to fraction form
    115,291.89/159,103.02 = 64,307.92/x
  3. Step 3: Cross multiply
    115,291.89x = 159,103.02 × 64,307.92
  4. Step 4: Simplify right side
    115,291.89x = 10,231,583,758.14
  5. Step 5: Solve for x
    x = 10,231,583,758.14/115,291.89
  6. Step 6: Final answer
    x = 88,745.05

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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.