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Finding the Fourth Proportional to 97,480.80, 145,929.60 and 91,713.60

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Solution

The fourth proportional to 97,480.80, 145,929.60 and 91,713.60 is: 137,296.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,480.80 : 145,929.60 = 91,713.60 : x
  2. Step 2: Convert to fraction form
    97,480.80/145,929.60 = 91,713.60/x
  3. Step 3: Cross multiply
    97,480.80x = 145,929.60 × 91,713.60
  4. Step 4: Simplify right side
    97,480.80x = 13,383,728,962.56
  5. Step 5: Solve for x
    x = 13,383,728,962.56/97,480.80
  6. Step 6: Final answer
    x = 137,296.05

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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.