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Finding the Fourth Proportional to 97,812.80, 146,719.20 and 97,229.60

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Solution

The fourth proportional to 97,812.80, 146,719.20 and 97,229.60 is: 145,844.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,812.80 : 146,719.20 = 97,229.60 : x
  2. Step 2: Convert to fraction form
    97,812.80/146,719.20 = 97,229.60/x
  3. Step 3: Cross multiply
    97,812.80x = 146,719.20 × 97,229.60
  4. Step 4: Simplify right side
    97,812.80x = 14,265,449,128.32
  5. Step 5: Solve for x
    x = 14,265,449,128.32/97,812.80
  6. Step 6: Final answer
    x = 145,844.40

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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.