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Finding the Fourth Proportional to 115,530.40, 173,372.40 and 65,610.40

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Solution

The fourth proportional to 115,530.40, 173,372.40 and 65,610.40 is: 98,459.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,530.40 : 173,372.40 = 65,610.40 : x
  2. Step 2: Convert to fraction form
    115,530.40/173,372.40 = 65,610.40/x
  3. Step 3: Cross multiply
    115,530.40x = 173,372.40 × 65,610.40
  4. Step 4: Simplify right side
    115,530.40x = 11,375,032,512.96
  5. Step 5: Solve for x
    x = 11,375,032,512.96/115,530.40
  6. Step 6: Final answer
    x = 98,459.22

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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.