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Finding the Fourth Proportional to 97,696.40, 146,544.60 and 72,910.40

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Solution

The fourth proportional to 97,696.40, 146,544.60 and 72,910.40 is: 109,365.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,696.40 : 146,544.60 = 72,910.40 : x
  2. Step 2: Convert to fraction form
    97,696.40/146,544.60 = 72,910.40/x
  3. Step 3: Cross multiply
    97,696.40x = 146,544.60 × 72,910.40
  4. Step 4: Simplify right side
    97,696.40x = 10,684,625,403.84
  5. Step 5: Solve for x
    x = 10,684,625,403.84/97,696.40
  6. Step 6: Final answer
    x = 109,365.60

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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.