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Finding the Fourth Proportional to 115,381.20, 173,095.20 and 65,485.20

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Solution

The fourth proportional to 115,381.20, 173,095.20 and 65,485.20 is: 98,241.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,381.20 : 173,095.20 = 65,485.20 : x
  2. Step 2: Convert to fraction form
    115,381.20/173,095.20 = 65,485.20/x
  3. Step 3: Cross multiply
    115,381.20x = 173,095.20 × 65,485.20
  4. Step 4: Simplify right side
    115,381.20x = 11,335,173,791.04
  5. Step 5: Solve for x
    x = 11,335,173,791.04/115,381.20
  6. Step 6: Final answer
    x = 98,241.08

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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.