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Finding the Fourth Proportional to 97,279.20, 145,918.80 and 93,391.20

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Solution

The fourth proportional to 97,279.20, 145,918.80 and 93,391.20 is: 140,086.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,279.20 : 145,918.80 = 93,391.20 : x
  2. Step 2: Convert to fraction form
    97,279.20/145,918.80 = 93,391.20/x
  3. Step 3: Cross multiply
    97,279.20x = 145,918.80 × 93,391.20
  4. Step 4: Simplify right side
    97,279.20x = 13,627,531,834.56
  5. Step 5: Solve for x
    x = 13,627,531,834.56/97,279.20
  6. Step 6: Final answer
    x = 140,086.80

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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.