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Finding the Fourth Proportional to 97,418.40, 146,127.60 and 81,015.90

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Solution

The fourth proportional to 97,418.40, 146,127.60 and 81,015.90 is: 121,523.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,418.40 : 146,127.60 = 81,015.90 : x
  2. Step 2: Convert to fraction form
    97,418.40/146,127.60 = 81,015.90/x
  3. Step 3: Cross multiply
    97,418.40x = 146,127.60 × 81,015.90
  4. Step 4: Simplify right side
    97,418.40x = 11,838,659,028.84
  5. Step 5: Solve for x
    x = 11,838,659,028.84/97,418.40
  6. Step 6: Final answer
    x = 121,523.85

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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.