Home / 115,605.52-173,443.28-81,936.72

Finding the Fourth Proportional to 115,605.52, 173,443.28 and 81,936.72

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Solution

The fourth proportional to 115,605.52, 173,443.28 and 81,936.72 is: 122,929.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,605.52 : 173,443.28 = 81,936.72 : x
  2. Step 2: Convert to fraction form
    115,605.52/173,443.28 = 81,936.72/x
  3. Step 3: Cross multiply
    115,605.52x = 173,443.28 × 81,936.72
  4. Step 4: Simplify right side
    115,605.52x = 14,211,373,469.24
  5. Step 5: Solve for x
    x = 14,211,373,469.24/115,605.52
  6. Step 6: Final answer
    x = 122,929.89

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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.