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Finding the Fourth Proportional to 115,453.20, 173,203.20 and 65,557.20

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Solution

The fourth proportional to 115,453.20, 173,203.20 and 65,557.20 is: 98,349.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,453.20 : 173,203.20 = 65,557.20 : x
  2. Step 2: Convert to fraction form
    115,453.20/173,203.20 = 65,557.20/x
  3. Step 3: Cross multiply
    115,453.20x = 173,203.20 × 65,557.20
  4. Step 4: Simplify right side
    115,453.20x = 11,354,716,823.04
  5. Step 5: Solve for x
    x = 11,354,716,823.04/115,453.20
  6. Step 6: Final answer
    x = 98,349.09

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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.